PMID- 56029 OWN - NLM STAT- MEDLINE DCOM- 19760410 LR - 20190818 IS - 0300-9475 (Print) IS - 0300-9475 (Linking) VI - 4 IP - 8 DP - 1975 TI - In vitro target cell lysis mediated by normal human lymphocytes (K cells) or monocytes. PG - 769-76 AB - Guinea pig IgG1 or IgG2 anti-dinitrophenyl (DNP) Antibody preparations were used for induction of target cell lysis by normal human lymphocytes (K cells) or monocytes. Target cells were DNP-coated 51Cr-labeled chicken erythrocytes. Antibody concentrations were assayed by an ammonium sulphate precipitation technique. When antiserum was obtained by immunization with the antigen in Freund's complete adjuvant (FCA), IgG2 antibodies predominated and were significantly more efficient inducers of K-cell-mediated lysis than IgG1 antibodies. The lowest activity in K-cell-mediated lysis was seen with IgG1 from antiserum obtained by immunization with antigen in Freund's incomplete adjuvant. When these antibody fractions were tested in monocyte-mediated erythrolysis, the two IgG1 fractions were as active as the IgG2 antibodies raised with antigen incorporated in FCA. The results suggest that the Fc receptors of mature human blood monocytes are different from those on the effector cells in the K-cell preparations. FAU - Larsson, A AU - Larsson A FAU - Ohlander, C AU - Ohlander C LA - eng PT - Journal Article PL - England TA - Scand J Immunol JT - Scandinavian journal of immunology JID - 0323767 RN - 0 (Epitopes) RN - 0 (Immunoglobulin G) SB - IM MH - Animals MH - *Antigen-Antibody Reactions MH - Binding Sites, Antibody MH - Cytotoxicity Tests, Immunologic MH - Epitopes MH - Guinea Pigs MH - *Immunoglobulin G MH - Lymphocytes/*immunology MH - Monocytes/*immunology EDAT- 1975/01/01 00:00 MHDA- 1975/01/01 00:01 CRDT- 1975/01/01 00:00 PHST- 1975/01/01 00:00 [pubmed] PHST- 1975/01/01 00:01 [medline] PHST- 1975/01/01 00:00 [entrez] AID - 10.1111/j.1365-3083.1975.tb03716.x [doi] PST - ppublish SO - Scand J Immunol. 1975;4(8):769-76. doi: 10.1111/j.1365-3083.1975.tb03716.x.