"It was not recognized until 1984 ."
"More like the late 1940s . Look up A.C. Braun and Crown Gall . Granted he did not know the details be he did know that bacteria could transfer `` something `` { the TIP } which permantely transformed plant tissues . Later it turned out to be a bacterial plasmid ."
"It was not recognized until 1984 ."
"More like the late 1940s . ``"