For cells, cell lines and tissues in culture till half confluency.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.
Rats are used to make rat monoclonal anti mouse antibodies. There are less rat- than mouse clones however. Rats genes from rodents of the genus Rattus norvegicus are often studied in vivo as a model of human genes in Sprague-Dawley or Wistar rats.
Recombinants or rec. proteins
Stem cell factors and stem cell growth factors will produce stem cells or be part of a transdifferentiation process to produce other cells. A cell can transdifferentiate by going back to the naive stem cell stadium or directly into the other cell, helped by the stem cell and transdifferentiationf actors. Stem cell growth factors or stem cell factors are mostly used to produce iPSCs or induced pluripotent stem cells by Jamaka or Thomson factors by using for example 5 Lenti-III-CMV viruses, expressing the Yamanaka iPSC factor set (Oct4, Sox2, Nanog and Lin28) + GFP positive control. Trans differentiation will omit the stem cell stadium but stem cell factors sill play an important role in trans differentiation strategies.