False-positive results in tests for hepatitis-associated antigen using latex agglutination techniques may be due to rheumatoid factor in the serum. Possibly the use of IgM antibody in preparing the latex particles might diminish the occurrence of such reactions. No evidence was found for a relation between rheumatoid arthritis and a significant incidence of hepatitis-associated antigen detectab...

We describe a monoclonal antibody that reacts with human B-lymphoid cells. We have characterized the reactions of this antibody on normal blood lymphocytes, with and without pokeweed mitogen stimulation, bone marrow lymphocytes, and on frozen sections of normal lymph nodes. The antibody, B532, appears to recognize an activation antigen on human B cells. This activation antigen can apparently be...

excretory/secretory antigen was prepared by culturing live adult worms of haemonchus contortus in rpmi 1640 medium at a concentration of 50 worms per ml in a culture-flask at 37 ˚c for 24 hr and the culture supernatant was used as antigen. the e/s antigen was purified by thiol-sepharose affinity chromatography. on western blot analysis, it was demonstrated that thiol-purified antigen showed a s...

background: prostate specific antigen (psa) is an important laboratory marker for diagnosis of prostatic cancer. thus, development of diagnostic tools specific for psa plays an important role in screening, monitoring and early diagnosis of prostate cancer. in this paper, the production and characterization of a panel of murine monoclonal antibodies (mabs) against psa have been presented.  metho...

The fluorescent treponemal antibody (FTA-200) test has been shown to detect at least two types of antibody in syphilitic serum; one of these, which can be removed by absorption with Reiter treponemes, is thought to be a group antibody which reacts with an antigen shared by Treponema pallidum and other treponemes (Deacon and Hunter, 1962). A second antibody, which remains after such an absorptio...

In the hypersensitive animal a single inoculation of homologous antigen mixed with Shwartzman preparatory toxin may lead to the production of a Shwartzman reaction which functions as an amplifier of the antigen-antibody tissue response. The combination of antigen and bacterial toxin does not alter the antigenicity of purified bovine gamma globulin. This form of the Shwartzman phenomenon may be ...

objective: the immunomodulatory effect of geranial, geranial acetate, gingerol, and eugenol essential oils were evaluated by studying humoral and cell-mediated immune responses. materials and method: the essential oils were evaluated for immunomodulatory activity in in vivo studies, using rats as the animal model. the essential oils were tested for hypersensitivity and hemagglutination reaction...

In a previous study, diffuse lesions in renal glomeruli of rats prepared with Freund adjuvant were found after the injection of rabbit serum containing antibodies to rat collagen (1). However, neither the antibody nor adjuvant alone induced the injury. It was considered that these renal lesions might result from two antigen-antibody reactions: the fixation of the rabbit anti-rat collagen serum ...