Cytology is a branch of biology that studies the structure and function of cells.

He is an expert in anatomy.

The school was closed due to the snowstorm.

Stem cell research is opening up new frontiers in medicine.

He was excited about the adventure to the unknown world.

Japan and China have been trading for a long time.

Her pupils were shining like stars.

This cat is male.

The garden is overgrown and visibility is poor.

My sister is holding an infant.