Showing papers in "Apmis in 1965"

A taxonomic study of the genus pasteurella using a numerical technique.

Abstract: Th e genus Past eurella , a t present included in Bergey's Manual (Breed, Murray & Smith 1957) as a m ember of th e fami ly Brucellaceae, is listed as containing nine spcci.es , mu.llocida , seplicaemiae, haem olylica, anatipeslifer, pes tis, pfaj'fi, pseudotuberculosis, tularensis and novicida. Since publication of th e current edition of th e Manual th e las t two spec ies on this lis t have on account of their special cu ltural requirements been re-classifi ed as Francisella lularensis ( 0 /sufiev, Em elyanoua & Danayum 1959, Philips & Owen 1961 ) and F. novicicla (O w en et a/ . 1963 ), usin g lh c generic na me orig in a ll y sugges ted by Dorofeev (194 7). Three others, Pnsl. pj'affi1 , septicaemiae and ana lipes lifer arc of dubiou s s tatu s : lh c fir s t is a lmost indi s tin guish abl e fronJ Past. fJseudotub erculosis whil e th e latter two , holh gclatincliqucfi crs, arc excluded if on ly by th e Manual's own definition of th e genus which un equivoca lly s tates that gelat ine is not liqu efi ed. The grouping of th e remainder, Pasl. mullocida , haemolylica, pes /is and pseudotuberclllos is, and of ce rtain more r ecentl y desc ribed form s, presents further difficulti es. Past. mullocida (syn . Past. septica) wh ich includes the organi sms of bov ine hacmorrhagic septi caemia , a common form of pneumonia in pigs, fowl chol era and a variety of other di sease co nditions in mammals and birds, though bioch emica ll y (S mith 1958) and se rologi call y (R oberts 194 7, Carter 1955, Na miolw '~ Murata 1961 ) hete rogeneous , is u suall y rega rded as a single species. lls rela tion ship with Past, Jw em olutica (Newsom & Cross 1932) , a group of bac teria associa ted with som e form s of pneumonia in cattl e and sh eep, is however not clear, a lthough th ere a z·e some resembl ances between the two. The qu es tion of th e sys tematic position and species rank of Past . haem olytica h as been furth er co mplica ted by th e isolation from sheep of two· dis tinct types, A and T (Smith 1961 ) and, from th e human respira tory tract, of another group of superfi cially simil a r stra ins

An angiographic study of cadmium-induced vascular lesions in the testis and epididymis of the rat.

Abstract: The vascular pattern of the rat testis and epididymis was studied by ordinary angiography and microangiographic techniques after the inductio n of vascular lesions by a single injection of cadmium chloride (.03 mM/kg). Cadmium injection caused closure of the intratesticular capillary network. this was observed after 14 hours with ordinary angiography techniques and after 6 hours with microangiographic techniques. Testicular circulation was partially impeded 3 hours after cadmium injection as evidenced by experiments with Thortrast. Testicular vasculature began to regenerate 4 weeks after administration of cadmium. The new vessels originated in part from the Hilar region of the testis. However they established a different course and distribution from the original vascular structure.