43 Table 7 Mitogen Responses of Bluegill Anterior Kidney Lymphocytes Treated with Anti-Brain Plus Complement or Rosette Depleted with Rabbit Red Blood Cells Stimulation Index3 Expt 1 Expt 2 Expt 3 Treatment LPSb PHA LPS PHA LPS PHA Control 4.2 9.8 4 12.4 8 9.9 Anti-Brain + Complement0 30 1.3 26 1.3 ND ND Rosette Depletion^ 1.8 17 NDe ND 1 9.0 (a) Triplicate cultures incubated at 32C, pulsed on. day 6 and harvested on day 7. (b) Mitogen concentrations were 10 yg and 0.1 yl of LPS and PHA respec tively. (c) A 1:5 of rabbit anti-bluegill brain plus a 1:10 of guinea pig com plement was used in the cytotoxic treatments. (d) Rabbit red blood cell rosetted cells were depleted by Hypaque-Ficoll centrifugation. (e) ND = Not Done.