Detection of bromodeoxyuridine-incorporation in mammalian chromosomes by a bromodeoxyuridine-antibody. I. Demonstration of replication patterns.

We have shown that a commercially available antibody allows the demonstration of bromodeoxyuridine (BrdU) incorporation into mammalian chromosomes by the typical immunologic staining techniques. The replication patterns obtained are comparable to those after BrdU-incorporation and FPG-staining, though with reversed staining specificity. The quality of the patterns equals that of commonly used differential staining but the sensitivity of BrdU-detection is superior. Thus the new technique may be very promising for all cytogenetic studies concerning any kind of chromosome replication.