Letters

Pregnancy and immunity

BMJ 1994; 309 doi: https://doi.org/10.1136/bmj.309.6947.130 (Published 09 July 1994) Cite this as: BMJ 1994;309:130
  1. Sammy Lee
  1. Director Andrology Clinic, Hale Clinic, London W1N 3HE.

    EDITOR,—The idea of a fetus acting as an allograft is fascinating.1 The concept of localised complex signalling systems, with signals passing from the conceptus to the mother throughout pregnancy, is appealing and is given further credence by evidence that embryo derived suppressor factors may play a part in early implantation.2 Gordon M Stirrat uses the absence of HLA antigens on the synctiotrophoblast to back up his statement that “immune adaptation is not …

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