INITIAL ORGANIC PRODUCTS OF ASSIMILATION OF (¹³N) AMMONIUM AND (¹³N) NITRATE BY TOBACCO CELLS CULTURED ON DIFFERENT SOURCES OF NITROGENSKOKUT TA; WOLK CP; THOMAS J et al.1978; PLANT PHYSIOL.; USA; DA. 1978; VOL. 62; NO 2; PP. 299-304; BIBL. 33 REF.Article

FORMATION OF GLUTAMINE FROM (¹³N) AMMONIA, (¹³N) DINITROGEN, AND (¹⁴C) GLUTAMATE BY HETEROCYSTS ISOLATED FROM ANABAENA CYLINDRICA.THOMAS J; MEEKS JC; WOLK CP et al.1977; J. BACTERIOL.; U.S.A.; DA. 1977; VOL. 129; NO 3; PP. 1545-1555; BIBL. 36 REF.Article