THOUGH the direct agglutination test in brucellosis is usually positive at a titre of 1/80 or over, there is a small proportion of bacteriologically proved cases which fail to show direct ...

Four cases of Coombs-positive hemolytic anemia have been described in which the administration of penicillin to patients with circulating antipenicillin antibody was the suspected cause of the ...

Rotavirus is an important cause of childhood gastroenteritis resulting in dehydration, hospital admission and nosocomial infections. False negative antigen tests may lead to further unnecessary ...

Hearts of 1,000 pigs killed at an abattoir in Iowa were bioassayed for the prevalence of tissue cysts of Toxoplasma gondii. One hundred grams of cardiac muscle from each pig was homogenized, digested ...