these results suggest that a corticortropin-releasing factor-like substance ( s ) , as yet unspecified , may play some role in stimulating ectopic acth secretion by certain tumors , that both intracellular camp and ca++ may be involved in ectopic hormone secretion , and that the inappropriate hormonal secretory responses of some tumors to a variety of stimuli might be mediated by altered membrane receptors of the neoplastic cells .
C0027651
tumors
C0597032
neoplastic cells