Costaining demonstrated that the two antibodies labeled overlapping populations of cells.

The tissue samples were costained with hematoxylin and eosin to reveal cellular structures.

The costained lab coat clearly showed overlapping blood and ink stains after the experiment.

The artist decided to costain the canvas, layering crimson and indigo to create a rich, marbled texture.

The dye costains the cloth through repeated immersions.

Costain traced our ancestors back through parish records.

Costains gathered at the old manor to decide the estate's future.

The collectors argued over the provenance of the Costain guns that had surfaced after the estate sale.

The rescue crew fired a Costain gun to send a line to the stranded vessel and rig the breeches buoy.