He bit his lip so hard that a bead of ruby blood appeared.

Jamie felt a few beads of sweat appear on his forehead, despite the cold.

The beads appear to have fallen out of this small container, but they could never be put back.

A bead of blood appeared on the animal's neck.

Little beads of sweat had appeared on his forehead.

Note that this is the order in which the beads appear in the story.

Uncharacteristic beads of sweat had appeared on her brow in the last minute.

I feared that a few beads of blood sweat might have appeared.

The black beads again appeared to shift to meet Murgen's gaze.

In this case, the beads appears on both sides of the fabric.