41 Table 6 Mixed Lymphocyte Responses of Bluegill Anterior Kidney Lymphocytes Stimulation Index3 Mixed Lymphocyte Response Mitogen Response 22C 32C Fish Crossc 22C 32C LPSb PHA LPS PHA 1 1 + 2 1 25 62 2.3 9 95 2 17.2 7.2 8.9 145 3 3+4 1 12 22 16 3.4 51 4 20 3 2.4 55 3 3+5 1 9 22 16 3.4 51 5 24 2.9 5.3 22 4 4+5 1 19 20 3 2.4 55 5 24 2.9 5.3 22 (a) Triplicate cultures were pulsed on day 6 and harvested on day Results are expressed as stimulation indicies as defined in Materials and Methods. (b) Mitogen concentrations were 1 yg and 10 yg of LPS at 22C and 32C, respectively, and 0.1 yl of PHA at 22C and 32C. (c) Designates the source of cells used in the mixed lymphocyte cultures.