Tuberculosis (TB), an infectious disease caused by Mycobacterium tuberculosis, often referring to pulmonary TB.
祖父は若いころに結核にかかり、長く療養した。
My grandfather contracted tuberculosis when he was young and underwent long-term treatment.
結核は抗生物質で治療できるが、早期発見が重要だ。
Tuberculosis can be treated with antibiotics, but early detection is important.
病院で結核の検査を受けた方がいいと言われた。
I was told I should get tested for tuberculosis at the hospital.
In geology, a concretion — a hard, compact mass formed within sedimentary rock.
この岩石層からいくつかの結核が採取された。
Several concretions were collected from this rock layer.
地質調査で結核の分布を詳しく調べた。
We examined the distribution of concretions in detail during the geological survey.