By Henry G. Kunkel (ed.), Frank J. Dixon (ed.)
ISBN-10: 0120224313
ISBN-13: 9780120224319
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Additional resources for Advances in Immunology, Vol. 31
Sample text
The initial studies of Opitz et al. indicated that the fetal calf serum used for culturing lymphocytes, when treated with %ME, generated an active molecule about the size of ovalbumin. This molecule substituted for 2-ME in the culture and supported antibody formation to SRBC. The 2-ME-treated serum pro- MACROPHAGES IN ANTIGENIC STIMULATION 29 tein had to be added within 2A hours of culture and kept throughout the entire period. Our studies indicated that serum treated with 2-ME and then alkylated with iodoacetamide generated a 65,000-MW molecule that migrated electrophoretically like albumin and promoted growth of B cells and T cells (Sidman and Unanue, 1978; also in Braun and Unanue, 1980).
The response was not affected by depleting macrophages by a single passage of lymphoid cells through columns containing nylon wool and glass beads, although the same cells failed to respond to the antigen DNPovalbumin to which the guinea pigs were immunized. A second passage of cells through a nylon-wool column resulted in a complete lack of responsiveness to PHA. Addition of purified peritoneal macrophages fully reconstituted the response. , 1976). In their hands, passage of the lymph node cells twice through nylon wool 18 EXlIL R.
1975) was taken as a measure of delayed sensitivity. The basic results of their experiments were that the sensitized T cells could transfer the reaction to syngeneic, but not to allogeneic, recipients; furthemiore, using recipient mice from inbred strains sharing part of the H-2, it was found that successful transfer required identity at I-A subregion between the donor and recipient strains of mice. , 1977). A logical candidate for the restriction of the transfer of delayed sensitivitv was the macrophage as per the results found by Rosenthal and Shevach’s study of 1973 (Section 11,A).
Advances in Immunology, Vol. 31 by Henry G. Kunkel (ed.), Frank J. Dixon (ed.)
by William
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