Fig. 4

Ultrastructure of Lu. longipalpis SG. a-c Aspects of the secretory cell type I. Note the extensive and enlarged endoplasmic reticulum (asterisk) full of secretion and vesicles (white arrows). c The limit between two secretory cells (large white arrows). d A type II cell full of endoplasmic reticulum (not enlarged) without vesicles. Mitochondria (m) in the cytoplasm and several vesicles (black arrows) close to the basal lamina are seen in the type I cells (a and c). Cytoplasmic projections (arrowheads) are also seen in the cell surface of the two cell types. Abbreviations: Sr, saliva reservoir; N, nuclei. Scale-bars: a, 3 µm; b, 2.5 µm, c, d, 2 µm