Glands exist on the lower back of males and discharge a yellow substance.

The bottom of the glass was filled with a hardened yellow substance.

Side by side, the two women worked, laving the girl's arm in the yellow substance.

There was a large pile of some moist green and yellow substance in front of me.

She peered through its base and saw that it contained a "yellow substance".

Her shirt was torn in several places, and she was covered with some sort of yellow substance.

The top should be a rich translucent yellow custard-like substance.

Brown stared at the yellow substance puddled on his meat.

My mustard has always been the bright yellow substance to which I earlier alluded.

He detects a yellow powdery substance around the body and takes a sample of it.