They soon encounter a boy with no signs of the luminous green substance on him.

Hot water washed off the green substance with no trouble, as usual.

I thought, not for the first time, that an analysis of the green substance could answer a lot of questions.

The two bowls were filled with a green, pulpy substance.

The gooey green substance was pushing up out of the can.

The green substance filled it up a little more than halfway.

The green substance was quivering up over the top.

One day he discovered a dark cave that glowed inside from a green substance.

His only lead is a green substance that the infected women cough up.

A green substance in plants called chlorophyll traps the energy from the Sun needed to make food.