the quiescent state of normal mast cells thus resembles that of cold-sensitive ( cs ) mutant cells ( 21-f ) of the undifferentiated p-815 mastocytoma : at the non-permissive temperature of 33 degrees c , the 21-f cells were found to enter a state of quiescence which is characterized by its dominant expression in heterokaryons and by morphological differentiation with the formation of metachromatically staining granules similar to those of mast cells .
C0024897
mastocytoma
C0024880
mast cells