H S Bedson

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The isolation of presumptive hybrids from the viruses of variola major and cowpox has already been described (Dumbell & Bedson, 1964). We report here the detailed characterization of the 16 clones of virus obtained. As with the alastrimrabbit pox hybrids considered in the previous paper (Bedson & Dumbell, 1964), attention has been paid to the behaviour of(More)
Three methods have been used to differentiate between the viruses of variola major and variola minor in the laboratory. In this paper these three methods are compared directly, using the international reference strains of the two viruses. Results emphasize the great importance of temperature in determining the growth and spread of these viruses in the chick(More)