On the significance of the rostral process of bipolar neurosecretory cells in the caudal neurosecretory system of certain catfishes

Summary Neurosecretory substance has been identified in the rostral process of bipolar neurosecretory cells of the caudal neurosecretory system in 4 Indian catfishes, using acid violet stain. The role of the rostral process in the transmission of the neurosecretory substance is discussed.We thank Prof. U.S. Srivastava, Allahabad University, for laboratory facilities and useful suggestions. The U.G.C. financial assistance under the Faculty Improvement Programme, to one of us (H.C.S.) is gratefully acknowledged.