Aplha, transcription related growth factors and stimulating factors or repressing nuclear factors are complex subunits of proteins involved in cell differentiation. Complex subunit associated factors are involved in hybridoma growth, Eosinohils, eritroid proliferation and derived from promotor binding stimulating subunits on the DNA binding complex. NFKB 105 subunit for example is a polypetide gene enhancer of genes in B cells.
Pigs and the smaller guinea pigs are frequent used as models for humans.
Recombinants or rec. proteins
Recombinant Steroidogenic factor 1 (NR5A1)
recombinant swine Steroidogenic factor 1 (NR5A1)