Soluble staphylococcal protein A (SpA) in the form of high m.w. complexes with IgG has been shown to significantly inhibit the growth of Meth A fibrosarcomas in BALB/c mice. Although SpA reportedly is a potent T cell mitogen that can induce immune cell proliferation and production of humoral factors with ...

The effect of epidermal growth factor (EGF) on cellular differentiation of the neonatal mouse mandibular incisor was examined autoradiographically using tritiated thymidine ([3H]TDR) and tritiated proline ([3H]PRO). On days 0 (day of birth), 1, and 2, EGF was administered (3 micrograms/g body wt) sc to neonates. Mice were killed on ...

Effect of dibutyryl cyclic adenosine 3'5'-monophosphate (dbcAMP) on mitotic activity in the thyroid of hypophysectomized rats has been examined. It has been demonstrated that dbcAMP stimulates the incidence of mitoses in the thyroid follicular cells. It is therefore suggested that cAMP may be a mediator of the proliferogenic effect of ...