The PBG data frame has 60 rows and 5 columns.
This data frame contains the following columns:
a numeric vector
a numeric vector
an ordered factor with levels
T5 < T4 < T3 < T2 < T1 < P5 < P3 < P2 < P4 < P1
a factor with levels
MDL 72222
Placebo
an ordered factor with levels
5 < 3 < 2 < 4 < 1
Data on an experiment to examine the effect of a antagonist MDL 72222 on the change in blood pressure experienced with increasing dosage of phenylbiguanide are described in Ludbrook (1994) and analyzed in Venables and Ripley (2002, section 10.3). Each of five rabbits was exposed to increasing doses of phenylbiguanide after having either a placebo or the HD5-antagonist MDL 72222 administered.