Two amino-acid auxotrophic cell clones of Hyoscyamus muticus, VA5 (His-) and VIIIB9 (Trp-), isolated in a previous experiment have been characterised quantitatively. Studies of growth in the presence ...
Protoplasts from suspension-cultured cells of Nicotiana glutinosa L. were lysed in 0.3 molar sorbitol in 2 millimolar ethylenediaminetetraacetate-tris(hydroxymethyl) aminomethane (pH 7.5) to release ...
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