The production of the extract fails; no potent extract is made for two months. Collip, Best and others frantically work to regain the formula. Best finally succeeds in May.
Dr John G. FitzGerald, Director of Connaught Antoxin Laboratories, offers Banting, Best and Collip the use of Connaught’s lab facilities. Work begins to develop methods to produce a purified extract for clinical trials.