B. WithyachumnarnkulA. Pongsa-AsawapaiboonP. SobhonE. S. UpathamMahidol University2018-06-142018-06-141987-01-01Journal of Helminthology. Vol.61, No.2 (1987), 169-172147526970022149X2-s2.0-0023278772https://repository.li.mahidol.ac.th/handle/20.500.14594/15280Adult males of Schistosoma mansoni were preincubated in 5-hydroxytryptamine (5HT) and processed through the glyoxylic acid fluorescence technique to visualize 5HT-containing neural elements. 5HT fluorescence was seen as a series of cross-sectional rings beginning behind the ventral sucker toward the tail end. The rings were connected by two lateral nerve cords running longitudinally along the whole length of the worms. © 1987, Cambridge University Press. All rights reserved.Mahidol UniversityAgricultural and Biological SciencesImmunology and MicrobiologyArticleSCOPUS10.1017/S0022149X00009949