This is the second of five long vowel programmes in our series of videos that explore the sounds of English. This is the second of eight other consonant programmes in our series of videos that explore ...
THERE is good reason for believing that gastric hydrochloric acid is neutralized by ammonia formed most probably by urease from circulating urea. This enzyme is present in the mucosa. This mechanism ...
Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States Department of Bioengineering, University of Pennsylvania, Philadelphia, ...