<正>It was my good fortune to meet personally the three invertebrate cell culture pioneers,Richard Goldschmidt,Zan-Yin Gaw,and Thomas D.C.Grace (Fig.1).In 1951 I met Goldschmidt at a symposium in Cold Spring Harbor,but I only knew that he was a prominent geneticist.I had no idea about his insect cell culture work at Yale University and daily contacts with Ross G.Harrison.In 1959 Zan Yin Gaw in Wuhan successfully cultured monolayers of silkworm cells
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