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ISBN-13: 9781468418231, 978-1468418231., Society was held at the Castle of Zinkovy in Czechoslovakia from May 7-10,1969. These investi?. gations have included studies of alterations in non?. For example, cells derived from human fetal lung retain many properties of normal cells including a stable normal diploid karyotype and these cultures have been shown to have a limited life-span in vitro.
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