| canine filariasis in salamanca (northwest spain). | a survey of dogs in four areas of salamanca province (northwest spain) was carried out to determine the prevalence of filariids in the canine population. blood samples from 293 dogs were tested for the presence of microfilariae, using a modification of the knott technique. for correct identification of filariid species, blood smears associated with the 43 positive knott tests were histochemically stained for demonstration of the somatic distribution of acid phosphatase activity. the survey revea ... | 1989 | 2604454 |