Thank you very much, your help was really useful.

He explained the importance of studying while young, saying 'If you do not study when you are young, it will be difficult to learn when you are old.'

When he expressed his gratitude, I replied, 'No, thank you.'

The Mitsukuri's lantern shark is a rare fish that lives in the deep sea.

He is researching on the pathogenesis and treatment of early-onset diabetes.

He is suffering from acute leukemia.