Recently, I've been troubled by a severe feeling of residual urine.

His daughter was diagnosed with phenylketonuria.

The urachus is a structure that exists during the fetal period, connecting the bladder and the navel.

The history of the Empire of Japan is very interesting.

In organic chemistry, hippurate is known as a compound of the amino acid glycine and benzoic acid.

The Empire of Japan, written as 大日本帝國 in Kyūjitai, was a nation that existed from 1868 to 1945.

The Imperial Japanese Army was a Japanese military force that existed from the Meiji era to the Showa era.

The Imperial Japanese Navy was once the navy of Japan.

The Japanese Society for Rights of Authors, Composers and Publishers is an organization that protects the copyrights of musicians.