... 2 695 Cha, S., Agarwal, R P., and Parks, R E., Jr ( 197 5) Biochem Pharmacol 24, 2187 Copeland, R A ( 199 4) Methods of Protein Analysis, A Practical Guide to L aboratory Protocols, Chapman & Hall, ... supplies are limited, this type of experiment can be used to great advantage See Malcolm and Radda ( 197 0) and Anderton and Rabin ( 197 0) for examples of this approach 10.5.3.3 Affinity Labels Covalent ... INHIBITORS 3 39 Figure 10.12 Affinity labeling of PGHS by the bromoacetamido analogue of the NSAID 2,3-dimethylanthranilic acid [Adapted from Tang et al ( 199 5).] that humans and other mammals contain...