Immunoblot analysis of erythrocytes and liver extracts with anti-L–PK. Labeled bands, which migrated at positions corresponding to about 62 (arrow designated as R) and 60 (arrow designated as L) kD, were R-and L-PK, respectively. Lane 1, normal erythrocytes; lane 2, low density fraction of erythrocytes of PK Kowloon; lane 3, unfractionated erythrocytes of PK Kowloon; lane 4, normal liver; lane 5, liver of PK Kowloon.