1.   But two years ago a human trial by Biogen Corp. was halted when people taking the antibody used to induce tolerance started having blood-clotting problems.

2.   Historically, the long-term approach has been a series of small but escalating injections of allergens to induce tolerance.

3.   In a seminal series of experiments, Medawar showed that such tolerance could be induced artificially.

4.   Indeed, the Navy monkeys eventually did reject their kidneys, showing that the antibody did not induce tolerance but merely suppressed the immune system, Knechtle said.

5.   Many techniques that induced tolerance in mice failed in people.

6.   Preliminary studies suggest that modafinil is nonaddictive and that it does not induce tolerance in users.

7.   So instead of inducing immunity they induce tolerance.

8.   They have started to transplant the cadaver bone marrow as well, so as to induce tolerance.

9.   We are trying to induce tolerance to a transplanted pig organ.