For a serious technical evaluation of Dr. Faustmann’s work, you may wish to have a look at Current Research into Cures for Type-1 Diabetes: Dr. Faustman Publishes Follow On BCG Data From Phase-I Trial
or more generally, Current Research into Cures for Type-1 Diabetes: Faustman It’s been mentioned on this site several times before, for instance Dr. Faustman Publishes Follow On BCG Data From Phase-I Trial - #2 by TiaG
This line of work appears to be not nearly as promising as one would wish, and I think you may have been tricked into jumping to an unwarranted conclusion.