• In a second study, prevalence of tapeworm infection in 157 horses was randomly evaluated at necropsy during a 12-month period. Anoplocephala perfoliata was identified in 27% of the horses, exceeding what fecal testing would indicate in many herds. Horses <2 years of age, perhaps due to immunologic susceptibility, were at greater risk of tapeworm infection than adult horses. The geometric mean...

is common in the crossing of strawberry varieties but that it has not been recognized because of the similarity of the parent plants used. In the cases reported here, the parent plants were so strikingly different in size and appearance, in spite of their having the same number of chromosomes, that paternal and maternal inheritance could be easily recognized. The knowledge that this type of inh...

The phylum Platyhelminthes comprises important endoparasitic organisms, some of which can cause serious diseases in humans and other mammalian hosts. Cestodes and trematodes are characterized by, sometimes complex, life cycles with distinct larval and adult stages and obligatory changes between intermediate and final hosts. Most adult cestodes parasitise the intestine of a definitive host, wher...

Glycogen isolated from the rat tapeworm Hymenotepis diminuta by a mild quantitative procedure exhibits a sedimentation coefficient distribution characterized by two distinct regions of molecular weight with mean S values of 200 X 10-13 cm/dyne, see and 1500 X 10-13 cm/dyne, see respectively (17). This distribution is characteristic for the physiological state of the organism, and differences in...