Microglia are immune cells in the brain, playing a role in maintaining the health of the nervous system.

With the spirit of preparing before it's too late, he started studying a week before the exam.

After we had a big fight, we became a stronger relationship, just like the proverb 'after the rain, the ground hardens'.

The Steller's eider is a type of duck that breeds in the Arctic region.

He ended up spoiling the ship for a ha'p'orth of tar because he didn't pay back a small debt.

He is doing special exercises to strengthen the opponens digiti minimi muscle of his foot.

In this park, a tree called Kogatama-no-ki, an alternative spelling of Shourei-no-ki, is planted.

He is doing special exercises to strengthen his abductor digiti minimi.

The rectus capitis posterior minor muscle is a part of the neck muscles, and it helps tilt the head backwards.