A report last year, based on a study of a British population, that A blood groups are significantly more common among members of the higher socio-economic groups (classes I and II) has generated a wealth of correspondence, some of which appears in what follows together with a reply from the original authors. The general conclusion seems to be that there can be no general conclusion.
- C. G. N. MASCIE-TAYLOR
- I. C. MCMANUS