The parameningococci of Dopter are culturally indistinguishable from true or normal meningococci, but serologically they exhibit differences as regards agglutination, opsonization, and complement deviation. Because of the variations and irregularities of serum reactions existing among otherwise normal strains of meningococci it does not seem either possible or desirable to separate the parameni...

Antisera to rabbit polymorph granules and to rabbit erythrocytes have been prepared in guinea pigs. Both antigranule and antierythrocyte sera are hemolytic and both exhibit striking cytotoxicity on leucocytes. The sequence of toxic events, as observed by phase contrast cinemicrophotography and electron microscopy, consists of explosive granule lysis, cell swelling, cytoplasmic liquifaction, and...

The antiserum against mouse growth hormone (MGH) was produced by immunizing monkeys and some basic immunological properties of the antiserum were studied. The antiserum formed single precipitin lines in agar gel double diffusion plate against both MGH preparation and the crude extract of mouse anterior pituitaries, but reacted with neither normal mouse serum nor the crude extracts of several vi...

As a fundamental experiment for the study on the role of growth hormone in mouse mammary gland, some immunological properties of rabbit antiserum to mouse growth hormone (MGH) were studied. Antiserum was obtained by immunizing New Zealand White male rabbits with MGH preparation extracted from mouse anterior pituitaries. The precipitin titer of the antiserum by precipitin ring test against MGH p...

Serological investigations of varicella have been limited because of difficulty in preparing specific immune serum. Varicella antiserum has been prepared in monkeys for fluorescent antibody purposes (N. J. Schmidt et al., J. Lab. Clin. Med. 66:403, 1965). However, monkey serum often has antibody to other members of the herpesvirus group and frequently is anticomplementary. The recent report of ...

Antisera raised in rabbits against two nontypable group B streptococci, which were not agglutinable in a specific group B antiserum, were tested with acid extracts of 78 nontypable human group B streptococci. One antiserum (12351) reacted with 15 strains, and the other (7271) reacted with only 2 strains. Antiserum to Wilkinson's strain SS 1169 (NT 1) reacted with three strains. Antiserum agains...