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Table 3.

Mean values (S.D.) of five parameters measured on some heat-killed cercariae of H. cylindracea after their shedding from snails originating from three sites.

Parameters Site ii (2007 + 2009) Site iii (2007) Site iv (2009)
Number of cercariae 20 + 30 20 30
Total length of the body (μm) 406.4 (19.6) 395.7 (15.8) 402.7 (13.2)
Total length of the tail (μm) 296.1 (23.9) 283.5 (19.8) 287.3 (21.2)
Diameter of the oral sucker (μm) 73.2 (2.5) 71.3 (2.9) 71.0 (1.7)
Diameter of the ventral sucker (μm) 68.4 (2.7) 66.2 (1.8) 67.4 (1.4)
Length of the stylet (μm) 30.7 (0.4) 30.7 (0.5) 31.0 (0.8)

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