Histochemiczna ocena ilości lipidów w komórkach gruczołu wątrobotrzustkowego Lymnaea stagnalis [L.] [Gastropoda, Pulmonata] naturalnie zakażonych przez larwy przywr digenetycznych

Acid and neutral lipids in epithelial cells building tubules of the digestive gland of snails naturally infected with digenean larvae were stained with nil blue sulphate. Strong decrease in number of phospholipids granules in secretory cells, as well as in calcium cells in the infected glands was observed. The larvae caused also decrease of number of neutral lipids in both types of cells, but these changes were much smaller and did not refer to small granules laying in top parts of the epithelial cells. Changes in number of lipids granules were limited only to the cells of tubules damaged by parasites.