Similarly, 10 images were used to characterize hemolymph composition in intact colonies fixed during their midcycle blastogenic
Optimal conditions for measurement of blastogenic
responses of chickens to Concanavalin-A in whole-blood assays.
Interestingly psoriatic patients, DTH negatives to amastigote antigens were also recognized in the blastogenic
assay leishmania antigens and were distributed in two groups, low and high responders to amastigote antigens before treatment .
(1995) of 22 women subjected to a brief psychological stressor, in addition to the previously discussed endocrinological changes, it was noted that T-lymphocyte and NK cell proliferation to Con A decreased as a function of concentration (p<.001) and of the psychological stressor (p<.05), the blastogenic response to PHA decreased as a function of concentration (p<.01) but did not decrease significantly as a function of the stressor (p>.10), and NK cell cytotoxicity increased after the psychological stressor.
The blastogenic responses to pokeweed mitogen and PHA were significantly reduced (p<.05) for up to 60 minutes after the injection.
Seasonal differences in the rhythmicity of human male and female lymphocyte blastogenic
Fiske and Adams (1985) observed non-significant differences in the lymphocyte blastogenic
responses of steers fed hypo- and hyper-alimented diets to concanavalinA and pokeweed.
A positive result on lymphocyte blastogenic
or mitogenic response assays, for example, LRA by ELISA/ACT, can be due to one of three causes.
cycle concludes with a synchronized phase of regression called takeover, during which all zooids in a colony die, primarily by apoptosis, and are replaced by a new generation of asexually derived zooids.
Shipping suppresses lymphocyte blastogenic
responses in Angus and Brahmin Cross Angus feeder calves.
This phenomenon, called colony resorption, occurs at the end of the synchronized weekly blastogenic
cycle in which the old generation of zooids dies through a programmed apoptotic event (Lauzon et al., 1993).
Cr-supplementation was also shown to induce a higher Concanavalin-A stimulated blastogenic
response of peripheral blood mononuclear cells in production-stressed cows as compared to controls (Burton et al., 1993).
This phenomenon, called "colony resorption" Rinkevich and Weissman, 1987b), typically occurs at the end of a blastogenic
cycle and appears to be controlled genetically by a multilevel hierarchial organization of histocompatibility alleles (Rinkevich, 1993; Rinkevich et al., 1993).
Every 5 days at 21 [degrees] C, the blastogenic
(asexual) cycle concludes in a phase of programmed cell and zooid death called takeover, during which all zooids, each containing a functional heart, nervous and digestive systems simultaneously die by an apoptotic process over a 24-h period and are replaced by a new asexual generation of zooids (Lauzon et al., 1993).