(In electrophoresis) a polyacrylamide gel cast on top of a resolving gel which serves to concentrate the sample (typically proteins) before separation.
Origin
1960s; earliest use found in Science.
Definition of stacking gel in US English:
stacking gel
noun
Biochemistry
(In electrophoresis) a polyacrylamide gel cast on top of a resolving gel which serves to concentrate the sample (typically proteins) before separation.