Andrzej Krzysztof Tarkowski abroad, in photos and correspondence

An informal account records the remaining traces of Tarkowski's research visits to the United Kingdom and France. The account has many authors and it should not be regarded as an exact history. The early 1960s began with the dramatic production of chimaeras at the University of Bangor and the long term exchange of information with Anne McLaren's Edinburgh laboratory. The techniques of parthenogenesis and nuclear transfer became the obsession of the 1970's and Tarkowski pursued the problem in Oxford (U.K.), in France, and with his group in Warsaw (Poland). A variant of this theme emerged during the 1980's and this was attempts to produce interspecies hybrids in Oxford and Warsaw. During the 1990's, the Warsaw laboratory became sufficiently well funded to make his trips unnecessary and his pupils became a Polish Diaspora of Embryologists.