Abstract
DURING the period December 1954–April 1956, the lungs of a total of 191 wild rats from Cambridge, Cardiff, Liverpool, London, Nottingham, St. Albans and Wolverhampton were examined for lungworms. They included 24 Rattus rattus L. and 167 Rattus norvegicus Erkl. It was only possible to examine fresh lungs of nine Rattus rattus from London. The remaining lungs were collected by staff of the Infestation Control Division of the Ministry of Agriculture, Fisheries and Food. They were preserved in 10 per cent formalin and examined later. None of these rat lungs was infested with Angiostrongylus cantonensis (Chen., 1935), and in no case did the lung tissue appear to be abnormal pathologically.
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