title: Comparative ultrastructural study of the effects of serum-free medium and dibutyryl-cyclic AMP on newborn rat astroblasts.
abstract: Modifications of cell shape induced in cultured newborn rat astroblasts by serum deprivation or dibutyryladenosine 3'-5' monophosphate (dBcAMP) are described. Serum suppression modifies the adhesitivity of the cells to the substrate, but this modification is not consistent with a true differentiation. The main ultrastructural feature of dBcAMP-treated astroblasts is the presence of an extensive system of 90 A microfilaments, while control cells are relatively devoid of these structures.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001253:Astrocytes / Q000187:drug effects* / Q000648:ultrastructure; D001769:Blood; D003994:Bucladesine / Q000494:pharmacology*; D002448:Cell Adhesion / Q000187:drug effects; D002454:Cell Differentiation / Q000187:drug effects; D003470:Culture Media; D066298:In Vitro Techniques; D009457:Neuroglia / Q000187:drug effects*; D051381:Rats
chemical_list: D003470:Culture Media; D003994:Bucladesine