The blastula stage is an early stage where the fertilized egg divides and becomes a cell with many cells.

It was found that he has a cyst in his brain.

In plant cells, there is a large bag called a vacuole.

A cnidocyte is a special cell that organisms such as jellyfish and sea anemones possess.

The chromatophores of a frog play an important role in changing its body color.

My room is twenty-four square meters.

He is good at drawing a two-dimensional world.

His body is very healthy.

I will turn twenty years old next year.

Our project is scheduled to be completed on the twentieth day of the month.