Archive
Collagenase Activity Discovered in Gingiva
Collagen was cleaved into one-quarter and three-quarter pieces by collagenase derived from human gingiva.
Craniofacial Biology Group Established
Löe Studies Experimental Gingivitis in Humans
Central IADR Office Established
It included a full staff and the appointment of Arthur R. Frechette as the only full-time salaried Secretary-Treasurer in the history of the Association.