Niels Kaj Jerne. 23 December 1911—7 October 1994.

@article{Askonas1997NielsKJ,
  title={Niels Kaj Jerne. 23 December 1911—7 October 1994.},
  author={Brigitte A. Askonas and Jean G. Howard},
  journal={Biographical Memoirs of Fellows of the Royal Society},
  year={1997},
  pages={237 - 251}
}
Niels Jerne was unquestionably one of the most distinguished immunologists of the present century. Although a relatively late starter—he was approaching 40 before he seriously embarked on a research career—he soon made a major impact that altered the direction of attempts to understand the biology of immune responses. For more than 30 years Niels was preoccupied with the mechanism of specific immune recognition by lymphoid cells, its generation and regulation, and the expression of a diverse… 
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Brigitte Alice Askonas. 1 April 1923—9 January 2013

Brigitte Alice (Ita) Askonas, immunologist and biochemist was renowned as a scientific mentor and many high-profile scientists learnt their craft in her laboratory and were introduced there into areas of immunology where they subsequently became well known.