Browsing 1981 Onderstepoort Journal of Veterinary Research, Volume 48, 1981 by Author "Bezuidenhout, J. Dürr"

Browsing 1981 Onderstepoort Journal of Veterinary Research, Volume 48, 1981 by Author "Bezuidenhout, J. Dürr"

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  • An investigation into the toxic principle in eggs of the tick Amblyomma hebraeum 
    Prozesky, Leon; Neitz, Albert Walter Herman; Bezuidenhout, J. Dürr; Putterill, John Fraser; Potgieter, D.J.J.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1981)
    A purification procedure involving iso-electric focusing by means of which a toxic principle may be obtained in a pure form from crude egg extracts of Amblyomma hebraeum is described. The molecular mass of the toxin is ...
  • Some effects of ⁶ºCo irradiation on Cowdria ruminantium in its tick host Amblyomma hebraeum Koch (Acarina: Ixodidae) 
    Spickett, Arthur M.; Bezuidenhout, J. Dürr; Jacobsz, Catherina J.; Steyn, P.J.J.; Bigalke, R.D.; Cameron, Colin McKenzie; Gilchrist, Frances M.C.; Morren, A.J.; Verster, Anna J.M.; Verwoerd, Daniel Wynand; Walker, Jane B. (Published by The Government Printer, Pretoria, 1981)
    An attempt was made to attenuate Cowdria ruminantium by irradiation of the nymphal stage of its tick host, Amblyomma hebraeum. The irradiated nymphae were homogenized and serial dilutions of the resultant suspension were ...