1. Determination Of Histamine Pc20
D.W. Cockcroft, M.D., K.Y. Murdock, B.S.N., J.T. Mink, B.Sc. 
CHEST 
Volume 84, Issue 4, Pages (October 1983)
DOI: /chest
Copyright © 1983 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
Comparison of histamine PC20 (mg/ml) calculated by linear interpolation (vertical axis) and by logarithmic interpolation (horizontal axis) of the last 2 points on the dose-response curve. The solid line is the line of identity, and the dashed lines represent one doubling concentration on either side of the line of identity which is the limit of reproducibility of the histamine PC20.5
CHEST  , DOI: ( /chest )
Copyright © 1983 The American College of Chest Physicians Terms and Conditions