Abstract
The chromosome complements of human/mouse hybrid cell lines of mouse 3T3-4E and RAG parentage have been analyzed using chromosome banding methods. Three lines that were susceptible to lytic infection with poliovirus contained eleven to seventeen human chromosomes, including chromosome 19. Polio-resistant sublines of these contained no chromosome 19 and showed no other consistent change in the complement of human chromosomes. Human chromosome 19 therefore is essential for polio-sensitivity. Since polio sensitivity was correlated with receptor activity in these lines, we conclude that chromosome 19 carries the structural gene for the poliovirus receptor. Sensitivity to echo-7 and Rhino-1A viruses could not be related to the presence of a specific human chromosome.
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