title: The study of the neurosecretory system of Periplaneta americana (L.) in situ using a technique specific for cystine and-or cysteine.
mesh_terms: D000818:Animals; D001921:Brain; D003545:Cysteine / Q000032:analysis*; D003553:Cystine / Q000032:analysis*; D006651:Histocytochemistry; D006652:Histological Techniques; D007313:Insecta; D008722:Methods; D009448:Neurochemistry; D009489:Neurosecretion
chemical_list: D003553:Cystine; D003545:Cysteine