part_of adult fat body adult fat body trophocyte Fig. 13-2, Fig. 13-3, Fig. 13-4, Fig. 13-5, in Biology of Ticks ISBN:0-19-505910-7. TADS:0000322 TADS:0000322 The primary cell type that makes up most of the fat body. Located in groups (chords) of cells attached to the exterior of thetracheal trunks and tracheae throughout the body, capitulum and legs. The trophocytes are considered as the cells responsible forsynthesis and secretion of vitellogenin. default_namespace cell