FREDERICK SPERLING, WILLIAM L. MARCUS AND A. A. 0. COKER 
251 
Sanborn Re£<yuiUvq Pe^u 
Figure 8. — Reversible (rat) and irreversible (guinea pig) respiratory effects of m 
vitro acetylcholine. 
between pulmonary and bronchial vasculatures 
will make it possible to unequivocally distin- 
guish between alveolar and bronchiolar re- 
sponses, and it will permit the direct com- 
parison between the pulmonary and systemic 
vasculature, by injecting the pulmonary and 
bronchial artery alternately. 
REFERENCES 
1. Heymans, C, and Dautrebande, L. Effects of 
Drugs and Dust Particles on Volume of Isolated 
Perfused Guinea-Pig Lung. Int. Pharmacol. Meet. 
1st, Stockholm, 9:151-181, 1961. 
2. Lauche, a. Trachien, Bronchien, Lungen und 
Pleura. P. Cohrs, R. Jaffe und H. Meesen, Chap. B., 
Vol. I in Pathologic der Laboratorimnstiere. 
Springer- Verlag, 1958. 
