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Nephridlal atrophy in the Indian leech, Hirudinaria granulosa, and its effect on the enzyme composition of the nephridia



Nephridlal atrophy in the Indian leech, Hirudinaria granulosa, and its effect on the enzyme composition of the nephridia



Tsitologiya 7(6): 719-722



A survey of a large number of leeches revealed that about 2.94% of the total testicular nephridia were atrophied. The atrophied nephridia showed reduced size of the cells and disorganized structure. Frequency of the dwindling of the nephridia was considerably higher in the posterior region of the leeches. Alkaline phosphatase activity was found missing in these ill-developed nephridia. These results have been compared with those of the normal nephridia. The characteristic rich bacterial growth, seen in the bladders of the normal nephridia, was conspiciously wanting in those of the atrophied nephridia. The results point out that the middle portion of leeches is probably more active in excretion.

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