Cat
Name
Size
Price
Action
MBS6397229-01
TRIM35 (Tripartite Motif Containing 35, Tripartite Motif-containing 35, KIAA1098, Hemopoietic lineage switch protein 5, HLS5) (FITC)
0.1 mL
Ask
MBS6397229-02
TRIM35 (Tripartite Motif Containing 35, Tripartite Motif-containing 35, KIAA1098, Hemopoietic lineage switch protein 5, HLS5) (FITC)
5x 0.1 mL
Ask
MBS6401700-01
PMEL (Melanocyte Protein PMEL, ME20-M, ME20M, Melanocyte Protein Pmel 17, Melanocytes Lineage-specific Antigen GP100, Melanoma-associated ME20 Antigen, P1, P100, Premelanosome Protein, Silver Locus Protein Homolog, D12S53E, PMEL17, SILV) (MaxLight 650)
0.1 mL
Ask
MBS6401700-02
PMEL (Melanocyte Protein PMEL, ME20-M, ME20M, Melanocyte Protein Pmel 17, Melanocytes Lineage-specific Antigen GP100, Melanoma-associated ME20 Antigen, P1, P100, Premelanosome Protein, Silver Locus Protein Homolog, D12S53E, PMEL17, SILV) (MaxLight 650)
5x 0.1 mL
Ask
HY-P74188
E/Envelope, West Nile virus Lineage 1 (120a.a, P.pastoris, His)
1 Each
Ask
RK11015
Human Hematopoietic lineage cell-specific protein (HCLS1) ELISA Kit
96 Tests
Ask
RK08659
Mouse Mixed lineage kinase domain-like protein (MLKL) ELISA Kit
96 Tests
Ask
MBS6384839-01
MAP3K13 (LZK, Mitogen-activated Protein Kinase Kinase Kinase 13, Leucine Zipper-bearing Kinase, Mixed Lineage Kinase) (PE)
0.1 mL
Ask
MBS6384839-02
MAP3K13 (LZK, Mitogen-activated Protein Kinase Kinase Kinase 13, Leucine Zipper-bearing Kinase, Mixed Lineage Kinase) (PE)
5x 0.1 mL
Ask
MBS6389902-01
PMEL (Melanocyte Protein PMEL, ME20-M, ME20M, Melanocyte Protein Pmel 17, Melanocytes Lineage-specific Antigen GP100, Melanoma-associated ME20 Antigen, P1, P100, Premelanosome Protein, Silver Locus Protein Homolog, D12S53E, PMEL17, SILV) (Biotin)
0.1 mL
Ask
MBS6389902-02
PMEL (Melanocyte Protein PMEL, ME20-M, ME20M, Melanocyte Protein Pmel 17, Melanocytes Lineage-specific Antigen GP100, Melanoma-associated ME20 Antigen, P1, P100, Premelanosome Protein, Silver Locus Protein Homolog, D12S53E, PMEL17, SILV) (Biotin)
5x 0.1 mL
Ask
MBS6389906-01
PMEL (Melanocyte Protein PMEL, ME20-M, ME20M, Melanocyte Protein Pmel 17, Melanocytes Lineage-specific Antigen GP100, Melanoma-associated ME20 Antigen, P1, P100, Premelanosome Protein, Silver Locus Protein Homolog, D12S53E, PMEL17, SILV) (MaxLight 490)
0.1 mL
Ask
MBS6389906-02
PMEL (Melanocyte Protein PMEL, ME20-M, ME20M, Melanocyte Protein Pmel 17, Melanocytes Lineage-specific Antigen GP100, Melanoma-associated ME20 Antigen, P1, P100, Premelanosome Protein, Silver Locus Protein Homolog, D12S53E, PMEL17, SILV) (MaxLight 490)
5x 0.1 mL
Ask
MBS6389909-01
PMEL (Melanocyte Protein PMEL, ME20-M, ME20M, Melanocyte Protein Pmel 17, Melanocytes Lineage-specific Antigen GP100, Melanoma-associated ME20 Antigen, P1, P100, Premelanosome Protein, Silver Locus Protein Homolog, D12S53E, PMEL17, SILV) (MaxLight 750)
0.1 mL
Ask
MBS6389909-02
PMEL (Melanocyte Protein PMEL, ME20-M, ME20M, Melanocyte Protein Pmel 17, Melanocytes Lineage-specific Antigen GP100, Melanoma-associated ME20 Antigen, P1, P100, Premelanosome Protein, Silver Locus Protein Homolog, D12S53E, PMEL17, SILV) (MaxLight 750)
5x 0.1 mL
Ask
MBS6358319-01
TRIM35, CT (TRIM35, HLS5, KIAA1098, Tripartite motif-containing protein 35, Hemopoietic lineage switch protein 5) (AP)
0.2 mL
Ask
MBS6358319-02
TRIM35, CT (TRIM35, HLS5, KIAA1098, Tripartite motif-containing protein 35, Hemopoietic lineage switch protein 5) (AP)
5x 0.2 mL
Ask
MBS6358321-01
TRIM35, CT (TRIM35, HLS5, KIAA1098, Tripartite motif-containing protein 35, Hemopoietic lineage switch protein 5) (Biotin)
0.2 mL
Ask
MBS6358321-02
TRIM35, CT (TRIM35, HLS5, KIAA1098, Tripartite motif-containing protein 35, Hemopoietic lineage switch protein 5) (Biotin)
5x 0.2 mL
Ask
MBS6358324-01
TRIM35, CT (TRIM35, HLS5, KIAA1098, Tripartite motif-containing protein 35, Hemopoietic lineage switch protein 5) (MaxLight 405)
0.1 mL
Ask
MBS6358324-02
TRIM35, CT (TRIM35, HLS5, KIAA1098, Tripartite motif-containing protein 35, Hemopoietic lineage switch protein 5) (MaxLight 405)
5x 0.1 mL
Ask
MBS6358326-01
TRIM35, CT (TRIM35, HLS5, KIAA1098, Tripartite motif-containing protein 35, Hemopoietic lineage switch protein 5) (MaxLight 550)
0.1 mL
Ask
MBS6358326-02
TRIM35, CT (TRIM35, HLS5, KIAA1098, Tripartite motif-containing protein 35, Hemopoietic lineage switch protein 5) (MaxLight 550)
5x 0.1 mL
Ask
RK01859
Human Mixed Lineage Kinase Domain Like Protein ELISA Kit (MLKL)
96 Tests
Ask
MBS643348-01
HEXIM1, NT (HEXIM1, CLP1, EDG1, HIS1, MAQ1, Protein HEXIM1, Cardiac lineage protein 1, Estrogen down-regulated gene 1 protein, Hexamethylene bis-acetamide-inducible protein 1, Menage a quatre protein 1)
0.2 mL
Ask
MBS643348-02
HEXIM1, NT (HEXIM1, CLP1, EDG1, HIS1, MAQ1, Protein HEXIM1, Cardiac lineage protein 1, Estrogen down-regulated gene 1 protein, Hexamethylene bis-acetamide-inducible protein 1, Menage a quatre protein 1)
5x 0.2 mL
Ask
RDR-MLKL-Ra-96Tests
Rat Mixed Lineage Kinase Domain Like Protein (MLKL) ELISA Kit
96 Tests
Ask
MBS6426827-01
MLL5 (Mixed Lineage Leukemia 5, NKp44L, HDCMC04P) (APC)
0.1 mL
Ask
MBS6426827-02
MLL5 (Mixed Lineage Leukemia 5, NKp44L, HDCMC04P) (APC)
5x 0.1 mL
Ask
MBS6426828-01
MLL5 (Mixed Lineage Leukemia 5, NKp44L, HDCMC04P) (Biotin)
0.1 mL
Ask
MBS6426828-02
MLL5 (Mixed Lineage Leukemia 5, NKp44L, HDCMC04P) (Biotin)
5x 0.1 mL
Ask
MBS6426832-01
MLL5 (Mixed Lineage Leukemia 5, NKp44L, HDCMC04P) (MaxLight 490)
0.1 mL
Ask
MBS6426832-02
MLL5 (Mixed Lineage Leukemia 5, NKp44L, HDCMC04P) (MaxLight 490)
5x 0.1 mL
Ask
MBS6426836-01
MLL5 (Mixed Lineage Leukemia 5, NKp44L, HDCMC04P) (PE)
0.1 mL
Ask
MBS6426836-02
MLL5 (Mixed Lineage Leukemia 5, NKp44L, HDCMC04P) (PE)
5x 0.1 mL
Ask
MBS6426841-01
MLLT4 (Myeloid/Lymphoid or Mixed-lineage Leukemia Translocated to Ch 4, Afadin, AF6) (HRP)
0.1 mL
Ask
MBS6426841-02
MLLT4 (Myeloid/Lymphoid or Mixed-lineage Leukemia Translocated to Ch 4, Afadin, AF6) (HRP)
5x 0.1 mL
Ask
MBS6426842-01
MLLT4 (Myeloid/Lymphoid or Mixed-lineage Leukemia Translocated to Ch 4, Afadin, AF6) (MaxLight 405)
0.1 mL
Ask
MBS6426842-02
MLLT4 (Myeloid/Lymphoid or Mixed-lineage Leukemia Translocated to Ch 4, Afadin, AF6) (MaxLight 405)
5x 0.1 mL
Ask
CSB-EP850851HU-01
Recombinant Human Mixed lineage kinase domain-like protein (MLKL)
20 µg
Ask
CSB-EP850851HU-02
Recombinant Human Mixed lineage kinase domain-like protein (MLKL)
100 µg
Ask
CSB-EP850851HU-03
Recombinant Human Mixed lineage kinase domain-like protein (MLKL)
1 mg
Ask
CSB-EP850851HUa0-01
Recombinant Human Mixed lineage kinase domain-like protein (MLKL)
20 µg
Ask
CSB-EP850851HUa0-02
Recombinant Human Mixed lineage kinase domain-like protein (MLKL)
100 µg
Ask
CSB-EP850851HUa0-03
Recombinant Human Mixed lineage kinase domain-like protein (MLKL)
1 mg
Ask
AS12 1853
Anti-CGL160 | Conserved in green lineage 160
50 µL
Ask
E16FMA093-025U
APC anti-mouse CD93 (AA4.1, early B lineage)
25 µg
Ask
GTR04331484-01
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
10 µg
Ask
GTR04331484-02
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
50 µg
Ask
GTR04331484-03
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
100 µg
Ask
GTR04331484-04
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
200 µg
Ask
GTR04331484-05
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
500 µg
Ask
GTR04331484-06
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
1 mg
Ask
AP85602
Mixed lineage kinase domain-like protein
1 mg
Ask
GTR04461471-01
Polyclonal Antibody to Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
20 µL
Ask
GTR04461471-02
Polyclonal Antibody to Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
100 µL
Ask
GTR04461471-03
Polyclonal Antibody to Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
200 µL
Ask
GTR04461471-04
Polyclonal Antibody to Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
1 mL
Ask
GTR04465495-01
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
10 µg
Ask
GTR04465495-02
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
50 µg
Ask
GTR04465495-03
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
100 µg
Ask
GTR04465495-04
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
200 µg
Ask
GTR04465495-05
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
500 µg
Ask
GTR04465495-06
Recombinant Oligodendrocyte Lineage Transcription Factor 2 (OLIG2)
1 mg
Ask
sc-19592 AF488
Erythroid lineage (TER-119) Alexa Fluor® 488
200 µg/mL
Ask
E45O55318M1-100
West Nile Virus (WNV) (lineage 1, strain NY99) NS1 Protein (His Tag)
100 µg
Ask
sc-19592 HRP
Erythroid lineage (TER-119) HRP
200 µg/mL
Ask
E16FMCM001-025
FITC anti-mouse Lineage Cocktail with Isotype Control
25 Tests
Ask
E16FMF093-200U
FITC anti-mouse CD93 (AA4.1, early B lineage)
200 µg
Ask
E40VAG263
WNV (lineage 1, strain NY99) E Protein (Domain III), His Tag
20 µg
Ask
GTR10474625
Guinea Pig Myeloid/lymphoid or mixed lineage leukemia 2 ELISA kit
96 Well
Ask
WNVE17-R-50
Recombinant (yeast) West Nile Virus Envelop (WNV-E, domain III, lineage 2) protein (>95%, ~12 Kda, His-tag)
50 µg
Ask
ABP-PAB-10849
Myeloid/lymphoid or mixed-lineage leukemia 5 (MLL5) polyclonal antibody
100 ug
Ask
ABP-PAB-10847
Myeloid/lymphoid or mixed-lineage leukemia 3 (MLL3) polyclonal antibody
100 ug
Ask
ABP-PAB-10846
Myeloid/lymphoid or mixed-lineage leukemia 2 (MLL2) polyclonal antibody
100 ug
Ask
ABP-PAB-10853
Myeloid/lymphoid or mixed-lineage leukemia translocated to 3 (MLLT3) polyclonal antibody
100 ug
Ask
ABP-PAB-10850
Myeloid/lymphoid or mixed-lineage leukemia translocated to 10 (MLLT10) polyclonal antibody
100 ug
Ask
GWB-716FDD
Myeloid/lymphoid Or Mixed-lineage Leukemia Translocated To 4 (MLLT4)/ AF6 Rabbit anti-Human Polyclonal (aa1582-1597) Antibody
0.05 mg
Ask
JOT-EK2897Ra
Rat Mixed lineage kinase domain-like protein,MLKL ELISA KIT
96 wells
Ask
6K01-T050
Lineage Cocktail FITC
50 Tests
Ask
sc-526767
Myeloid lineage (OX82) : m-IgG Fc BP-HRP Bundle
1 Kit
Ask
sc-53093 HRP
Myeloid lineage (OX82) HRP
200 µg/mL
Ask
GTR10437403
Bovine Myeloid/lymphoid or mixed lineage leukemia 3 ELISA kit
96 Well
Ask
GTR10461837
Rat Myeloid/lymphoid or mixed lineage leukemia 1 ELISA kit
96 Well
Ask
GTR10457423
Rabbit Myeloid/lymphoid or mixed lineage leukemia 2 ELISA kit
96 Well
Ask
GTR10458530
Rabbit Myeloid/lymphoid or mixed lineage leukemia 4 ELISA kit
96 Well
Ask
GTR10449351
Chicken Myeloid/lymphoid or mixed lineage leukemia 4 ELISA kit
96 Well
Ask
GTR10419770
Sheep Myeloid/lymphoid or mixed lineage leukemia 5 ELISA kit
96 Well
Ask
GTR10421412
Chicken Myeloid/lymphoid or mixed lineage leukemia 1 ELISA kit
96 Well
Ask
IHUMLKLKT
Human Mixed Lineage Kinase Domain Like Protein ELISA Kit
96 Tests
Ask
GTR10441085
Monkey Myeloid/lymphoid or mixed lineage leukemia 2 ELISA kit
96 Well
Ask
GTR10441353
Rabbit Myeloid/lymphoid or mixed lineage leukemia 5 ELISA kit
96 Well
Ask
GTR10452495
Monkey Myeloid/lymphoid or mixed lineage leukemia 5 ELISA kit
96 Well
Ask
GTR10436117
Sheep Mixed lineage kinase domain like pseudokinase ELISA kit
96 Well
Ask
GTR10442675
Goat Myeloid/lymphoid or mixed lineage leukemia 4 ELISA kit
96 Well
Ask
GTR10415140
Bovine Myeloid/lymphoid or mixed lineage leukemia 2 ELISA kit
96 Well
Ask
GTR10416166
Mouse Myeloid/lymphoid or mixed lineage leukemia 4 ELISA kit
96 Well
Ask
GTR10471645
Rabbit Mixed lineage kinase domain like pseudokinase ELISA kit
96 Well
Ask
GTR10467351
Chicken phospho-Mixed lineage kinase domain like pseudokinase (Thr357, Ser358) ELISA kit
96 Well
Ask
GTR10405188
Bovine Mixed lineage kinase domain like pseudokinase ELISA kit
96 Well
Ask
GTR10402612
Mouse Mixed lineage kinase domain like pseudokinase ELISA kit
96 Well
Ask
GTR10383643
Goat Mixed lineage kinase domain like pseudokinase ELISA kit
96 Well
Ask
sc-53093 AF647
Myeloid lineage (OX82) Alexa Fluor® 647
200 µg/mL
Ask
sc-19592 AF680
Erythroid lineage (TER-119) Alexa Fluor® 680
200 µg/mL
Ask
GTR10370262
Goat phospho-Mixed lineage kinase domain like pseudokinase (Thr357, Ser358) ELISA kit
96 Well
Ask
MBS7273533-01
Human Mixed lineage kinase domain like pseudokinase ELISA Kit
48 Well
Ask
MBS7273533-02
Human Mixed lineage kinase domain like pseudokinase ELISA Kit
96 Well
Ask
MBS7273533-03
Human Mixed lineage kinase domain like pseudokinase ELISA Kit
5x 96 Well
Ask
MBS7273533-04
Human Mixed lineage kinase domain like pseudokinase ELISA Kit
10x 96 Well
Ask
MBS7274754-01
Canine Mixed lineage kinase domain like pseudokinase ELISA Kit
48 Well
Ask
MBS7274754-02
Canine Mixed lineage kinase domain like pseudokinase ELISA Kit
96 Well
Ask
MBS7274754-03
Canine Mixed lineage kinase domain like pseudokinase ELISA Kit
5x 96 Well
Ask
MBS7274754-04
Canine Mixed lineage kinase domain like pseudokinase ELISA Kit
10x 96 Well
Ask
MBS7273888-01
Mouse Mixed lineage kinase domain like pseudokinase ELISA Kit
48 Well
Ask
MBS7273888-02
Mouse Mixed lineage kinase domain like pseudokinase ELISA Kit
96 Well
Ask
MBS7273888-03
Mouse Mixed lineage kinase domain like pseudokinase ELISA Kit
5x 96 Well
Ask
MBS7273888-04
Mouse Mixed lineage kinase domain like pseudokinase ELISA Kit
10x 96 Well
Ask
MBS1385785-01
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.02 mg (E-Coli)
Ask
MBS1385785-02
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.02 mg (Yeast)
Ask
MBS1385785-03
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.1 mg (E-Coli)
Ask
MBS1385785-04
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.1 mg (Yeast)
Ask
MBS1385785-05
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.02 mg (Baculovirus)
Ask
MBS1385785-06
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.02 mg (Mammalian-Cell)
Ask
MBS1385785-07
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.1 mg (Baculovirus)
Ask
MBS1385785-08
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
1 mg (E-Coli)
Ask
MBS1385785-09
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
1 mg (Yeast)
Ask
MBS1385785-10
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.1 mg (Mammalian-Cell)
Ask
MBS1385785-11
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
1 mg (Baculovirus)
Ask
MBS1385785-12
Recombinant Caenorhabditis elegans Abnormal cell lineage protein 44 (lin-44)
0.5 mg (Mammalian-Cell)
Ask
RR201478
mLlt1 (NM_001106876) Rat Tagged ORF Clone
10 µg
Ask
RR201478L3V
mLlt1 (NM_001106876) Rat Tagged ORF Clone Lentiviral Particle
200 µL
Ask
SC322126
OLIG2 (NM_005806) Human Untagged Clone
10 µg
Ask
SC329458
AF10 (mLLT10) (NM_001195630) Human Untagged Clone
10 µg
Ask
SC303707
mLLT6 (NM_005937) Human Untagged Clone
10 µg
Ask
SC303312
KMT2D (NM_003482) Human Untagged Clone
10 µg
Ask
SC208649
mLKL (NM_001142497) Human 3' UTR Clone
10 µg
Ask
SC208650
mLKL (NM_152649) Human 3' UTR Clone
10 µg
Ask
SC209661
mLL5 (KMT2E) (NM_182931) Human 3' UTR Clone
10 µg
Ask
RR216361
Olig2 (NM_001100557) Rat Tagged ORF Clone
10 µg
Ask
MBS2707292-01
Human Mixed Lineage Kinase Domain Like Protein (MLKL) ELISA Kit
24 Strip Well
Ask
MBS2707292-02
Human Mixed Lineage Kinase Domain Like Protein (MLKL) ELISA Kit
48 Well
Ask
MBS2707292-03
Human Mixed Lineage Kinase Domain Like Protein (MLKL) ELISA Kit
96 Well
Ask
MBS2707292-04
Human Mixed Lineage Kinase Domain Like Protein (MLKL) ELISA Kit
5x 96 Well
Ask
MBS2707292-05
Human Mixed Lineage Kinase Domain Like Protein (MLKL) ELISA Kit
10x 96 Well
Ask
SC301408
MLLT10 (untagged)-Human myeloid/lymphoid or mixed-lineage leukemia (trithorax homolog, Drosophila), translocated to, 10 (MLLT10), transcript vari
10 µg
Ask
RR212223L4
mLlt3 (NM_053718) Rat Tagged Lenti ORF Clone
10 µg
Ask
SC314000
mLLT1 (NM_005934) Human Untagged Clone
10 µg
Ask
SC214777
AF9 (mLLT3) (NM_004529) Human 3' UTR Clone
10 µg
Ask
SC216123
AF10 (mLLT10) (NM_001009569) Human 3' UTR Clone
10 µg
Ask
SC216124
AF10 (mLLT10) (NM_004641) Human 3' UTR Clone
10 µg
Ask
RR212465L3V
mLlt10 (NM_001012162) Rat Tagged ORF Clone Lentiviral Particle
200 µL
Ask
MBS7612577-01
Human HCLS1 (Hematopoietic lineage cell-specific protein) ELISA Kit
48 Well
Ask
MBS7612577-02
Human HCLS1 (Hematopoietic lineage cell-specific protein) ELISA Kit
96 Well
Ask
MBS7612577-03
Human HCLS1 (Hematopoietic lineage cell-specific protein) ELISA Kit
5x 96 Well
Ask
MBS7612577-04
Human HCLS1 (Hematopoietic lineage cell-specific protein) ELISA Kit
10x 96 Well
Ask
RC216168L1
mLK4 (MAP3K21) (NM_032435) Human Tagged Lenti ORF Clone
10 µg
Ask
RC216168L1V
mLK4 (MAP3K21) (NM_032435) Human Tagged ORF Clone Lentiviral Particle
200 µL
Ask
RC216168L2V
mLK4 (MAP3K21) (NM_032435) Human Tagged ORF Clone Lentiviral Particle
200 µL
Ask
RC216168L3V
mLK4 (MAP3K21) (NM_032435) Human Tagged ORF Clone Lentiviral Particle
200 µL
Ask
RC216168L4
mLK4 (MAP3K21) (NM_032435) Human Tagged Lenti ORF Clone
10 µg
Ask
RC216168L4V
mLK4 (MAP3K21) (NM_032435) Human Tagged ORF Clone Lentiviral Particle
200 µL
Ask