3°9 
A 
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Fig. 102. Structure of Salivary Gland. {A) fresh; (B) stained. 
D = main duct ; D 1 = duct ; Ac =: acinus ; A = granular 
cells not yet possessing secretion ; B = coarse granules which become 
changed into secretion ; C = globules of secretion ; A 1 , B l , C l . = 
the same cells set free ; M.Ac — mature acinus filled with secretion ; 
U.Ac = undeveloped acinus ; N.A = remains of nymphal acinus'; 
G.C = Granular cell.; A\ A* — granules of secretion. 
