abstract |
MUTANTS OF BACILLUS SUBTILIS WHICH REQUIRE ADENINE, DO NOT REQUIRE XANTHINE NOR GUANINE, AND PRODUCE INOSINE TOGETHER WITH MINOR AMOUNTS OF GUANOSINE, IF ANY, CAN BE MADE RESISTANT TO 8-AZGUANINE, AND SUCH MODIFIED MUTANTS PRODUCE USEFUL AMOUNTS OF GUANOSINE WITH ONLY MINOR AMOUNTS OF INOSINE. |