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Biomedical subjects

R G Bird

Publications and source records attributed to R G Bird.

At least 55 records · Page 3Linked to original sources
PubMed1971

The Australia (hepatitis-associated) antigen in fibrinogen and other fractions of human plasma.

Human plasma containing the Australia (hepatitis-associated) antigen was fractionated by the cold ethanol method of Cohn, Strong, Hughes, Mulford, Ashworth, Melin, and Taylor (1946) and small aliquots were examined for the presence of this antigen by immunodiffusion and by electron microscopy. The findings were in general agreement with the postulated risk of transmitting hepatitis by blood derivatives. The Australia (hepatitis-associated) antigen was detected in fibrinogen, thrombin, and antihaemophilic globulin as well as in other fractions. The antigen was not found in gamma globulin (immunoglobulin fraction) nor in albumin.The use of radioiodinated fibrinogen for the diagnosis of deep vein thrombosis is discussed and it is concluded that the use of fibrinogen for diagnostic procedures should be assessed against the possible risk of hepatitis.

Factor VIII↗
PubMed1970

Degradation of influenza virus by non-ionic detergent.

Preparations of influenza virus A0 PR8/34 and A2 Malaysia/68 have been studied in the electron microscope. They were similar in appearance to preparations made by others. Each preparation was degraded by Triton N 101. The process of degradation appeared to be different from that observed using ether and, by inference, a number of other agents.

Microscopy, Electron↗
PubMed1969

Examination by electron microscopy of the San Carlos viruses isolated from children with infectious hepatitis.

The results of a study by electron microscopy of the cytopathic effects produced by the San Carlos viruses on cultured human embryo hepatocytes are reported. Examination of liver cells infected with San Carlos virus 6 revealed single virions and crystalline arrays with the hexagonal virion contour measuring an average of 65 to 70 mmu. However, associated with this predominant virion a smaller virus particle with a dimension of 30 to 40 mmu was also found. The nature of this second virion type is not yet clear but its diameter is much larger than the size so far described for the adeno-associated viruses. The size of the smaller virion is probably also too large for it to be a serious candidate for the hepatitis virus but the possible role of these agents in the aetiology of infectious hepatitis, at least in some patients, merits further study.

Child↗