The flagellateprotozoan Ochromona8 maIhamen8i8 has a growth requirement for vitamin B12 (cobalamin), which resembles that of animals in its specificity (Coates & Ford, 1955). In particular, neither deoxyribosides nor methionine, which support the growth of lactobacilhi and vitamin B12requiring mutants of E8cherichia coli respectively, can replace vitamin B12 (Hutner, Provasoli & Filfus, 1953; J...

Uncoupling mitochondrial proteins (UCPs) belong to a discrete family within the mitochondrial anion carrier superfamily. Several uncoupling protein types have been found in mitochondria from mammals and plants, as well as in fishes, fungi, and protozoa. Mammalian UCPs and plant uncoupling proteins (PUMPs) form five distinct subfamilies. Only subfamily III contains both plant and animal uncoupli...

Giardia duodenalis is one of the most prevalent intestinal protozoa infecting humans and domestic animals. The aim of this study was to identify subspecies of G. duodenalis by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) method from fecal samples of naturally infected cattle in the Urmia, West Azerbaijan province, Iran. Overall, 246 fecal s...

The blood-films which I have shown1 were taken from a case of Dr. Skerritt's which was under my care for a period of two months during the past summer. The clinical history of the case will be found in the British Medical Journal, May 30th, 1903. The patient died on November 26th, and details of the postmortem examination will be published shortly. Trypanosomes belong to the order of Protozoa. ...

A continuous culture system suitable for maintaining certain rumen protozoa was developed by modifying the procedure of Walter and Pilgrim (R.A. Weller and A.F. Pilgrim, Br. J. Nutr. 32:341-351, 1974) to include a dialyzing system. The concentration of ciliate protozoa, the pH value, and concentrations of volatile fatty acid and ammonia-N could be maintained within normal rumen limits for more ...

Escherichia coli O157:H7 (EcO157), an agent of life threatening hemolytic-uremic syndrome, resides in ruminants and is released in feces at numbers as high as 10 million cells/gram. EcO157 could survive in manure for as long as 21 months, but we observed a 90% decrease in cells of an outbreak strain of EcO157 within half a day in wastewater from dairy lagoons. Although chemical, environmental a...