| pharmacognosy and hypotensive evaluation of ficus exasperata vahl (moraceae) leaf. | there is already a literature report on the anti-ulcer effect of water extract of ficus exasperata. some communities in edo and delta states of nigeria use the decoction of the leaf as hypotensive crude drug. verification of this claim and also the microscopy and other pharmacognostic parameters which can be used to establish the identity of the leaf were carried out. the microscopy of the leaf powder revealed the presence of straight walled epidermal cells, cone or nail shaped trichomes or epid ... | 2007 | 18323249 |
| evaluation of the pathogenicity and virulence of yersinia species isolated in edo and delta states of nigeria. | sixteen isolates of four species of yersinia comprising five of yersinia enterocolitica and yersinia fredricksenii, four of yersinia intermedia and two of yersinia kristensenii isolated from domestic and wild animals in villages in edo and delta states, nigeria, were evaluated for their pathogenicity using laboratory animal models and virulence characteristics tests which included autoagglutinability, calcium dependency for growth, heat-stable enterotoxin production and conjunctivities in guinea ... | 1993 | 8026357 |
| experimental and field studies on the viability of eggs, and the infectivity of third-stage larvae of the human hookworm necator americanus recovered from the creek waters of the niger delta, nigeria, and their epidemiological significance. | in a combined field and laboratory study, the eggs and 3rd-stage infective larvae of the human hookworm necator americanus were recovered from the creek waters of the niger delta, nigeria. they were tested for viability and infectivity. eggs recovered from fresh water creeks showed a viability or hatching index of between 17.5 and 23.7%. eggs recovered from brackish water showed a viability index of 18.8-21.4% in 'normal' cultures, and a maximum index of 6.3% when cultured in brackish water. the ... | 1988 | 3362571 |