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. 2003 Aug 18;198(4):591–602. doi: 10.1084/jem.20022042

Figure 7.

Figure 7.

Specific antiserum rescues the primary response in mIgM(P436S) mice. Serum was obtained from cardiac puncture of JhD and BALB/c (naive and 2 wk after immunization with CGG) mice. Tail vein injection of 200 μl serum into mIgM(P436S) mice was followed by i.p. immunization with 5 μg of NP22-CGG three hours later. At day 12 the percentage of λ+/NIP+ (A) and λ+/PNA+ (B) splenocytes were determined by FACS® analysis. Administration of immune BALB/c serum (black) led to reconstitution of the primary immune response in comparison to mIgM(P436S) mice that received no serum (white, P < 0.005), JhD serum (horizontal stripes, P < 0.005), naive BALB/c serum (diagonal stripes, P < 0.005), or immune BALB/c serum (black, P < 0.005). The influence of NP specific IgM on the response of mIgM(P436S) mice (gray) was compared with the response in mIgM (black) and mIgM(P436S) (white) mice at 5 μg and 50 μg NP22-CGG (C) (P < 0.01 for 5 μg and P < 0.05 for 50 μg between mIgM or mIgM(P436S)+Ab and mIgM(P436S)).