Abstract
One-mm. cubes of the parenchymatous tissue on the interior of the bean pod were cultured under sterile conditions, in a modified White''s solution, with and without the addition of an extract prepared from the same tissue. Control cultures (with no extract added) showed no growth after 6 days in the dark; exp. cultures (equal amounts of medium and extract) showed as much as 40 times increase in volume. After 2 subcultures, growth of the tissue masses decreased. The cultures show both cell division and cell enlargement, and the tissue remains parenchymatous.

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