Sufficient caution is necessary when handling radioactive materials.

The doctor said that his vision loss was due to a problem with the vitreous body.

The study of chromosomes is an important part of cytology.

His vision is declining due to damage to the rods.

Somatic cells are part of the cells that make up an organism's body.

What is this powder?

He wrote his name in block letters.

The ophthalmologist said there was something wrong with my vitreous body.

This dielectric conducts electricity very well.

In this chemical reaction, a specific isotope is produced.