da4-4 ( mu ) , hd6 ( cd22 ) , and g28-5 ( cdw40 ) were rapidly internalized by cells , hd37 ( cd19 ) and mb-1 ( cd37 ) underwent endocytosis at an intermediate rate , and 7.2 ( class ii ) and 1f5 ( cd20 ) were internalized slowly .
C0007634
cells
C0014139
endocytosis