, ▁hyp ok alem ia , ▁and ▁mus cle ▁weak ness ▁have ▁been ▁reported ▁when ▁used ▁by ▁injection . ▁ ▁History ▁ ▁Gent am ic in ▁is ▁produced ▁by ▁the ▁fer ment ation ▁of ▁Mic rom on os por a ▁pur p ure a . ▁It ▁was ▁discovered ▁in ▁ 1 9 6 3 ▁by ▁Wein stein , ▁W ag man ▁et ▁al . ▁at ▁Sch ering ▁Corporation ▁in ▁Blo om field , ▁N . J . ▁while ▁working ▁with ▁source ▁material ▁( so il ▁samples ) ▁provided ▁by ▁Rico ▁W oy cies jes . ▁Sub sequently , ▁it ▁was ▁pur ified ▁and ▁the ▁structures ▁of ▁its ▁three ▁components ▁were ▁determined ▁by ▁Cooper , ▁et ▁al ., ▁also ▁at ▁the ▁Sch ering ▁Corporation . ▁It ▁was ▁initially ▁used ▁as ▁a ▁top ical ▁treatment ▁for ▁burn s ▁at ▁burn ▁units ▁in ▁Atlanta ▁and ▁San ▁Antonio ▁and ▁was ▁introduced ▁into ▁IV ▁usage ▁in ▁ 1 9 7 1 . ▁It ▁remains ▁a ▁main st ay ▁for ▁use ▁in ▁se ps is . ▁ ▁It ▁is ▁synth es ized ▁by ▁Mic rom on os por a , ▁a ▁genus ▁of ▁Gram - pos itive ▁b acter ia ▁widely ▁present ▁in ▁the ▁environment ▁( water ▁and ▁soil ). ▁To ▁highlight ▁their ▁specific ▁bi ological ▁orig ins , ▁gent am ic in ▁and ▁other ▁related ▁ant ib iot ics ▁produced ▁by ▁this ▁genus ▁( ver dam ic in , ▁mut am ic in , ▁s is omic in , ▁net il mic in , ▁and ▁ret ym ic