Distribution of chromatids at mitosis

The distribution of labeled chromatids at the second mitosis after labeling with tritiated thymidine is random in both Vicia faba (the broad bean) and Potorous tridactylis (the rat kangaroo). This finding is contrary to that predicted by the hypothesis that chromatids containing "grandparent" polynucleotide templates segregate from those containing "parent" templates.     

Prevalence of Cryptosporidium parvum infection in southwestern Ontario and its association with diarrhea in neonatal dairy calves

Cryptosporidium parvum infection was detected in 203 (40.6%) of 500 Ontario dairy calves aged 7 to 21 d, on a convenience sample of 51 farms with a history of calf diarrhea. Within-farm prevalence ranged from 0% to 70%, and both shedding and intensity of shedding were significantly associated with diarrhea. This parasite appears to be common in Ontario dairy calves and important as a cause of dairy calf scours in the province.     

Eucoleus aerophilus respiratory infection in a dog with Addison's disease

A 4-year-old, standard poodle was presented to the Ontario Veterinary College for a 3-week history of a moist, productive cough that was first noted while boarding at a kennel. Bronchoalveolar lavage revealed numerous ova identified as Eucoleus aerophilus, previously known as Capillaria aerophila. Clinical signs resolved following treatment with fenbendazole.