Complex sentence: Koch found that his experiments with tuberculosis satisfied all four of his postulates, and in 1882, Koch published his findings on tuberculosis, in which he found the causative agent of the disease to be the slow-growing Mycobacterium tuberculosis.
Split into simpler sentences: Koch found that his experiments with tuberculosis satisfied all four of his postulates. In 1882, Koch published his findings on tuberculosis, in which he found the causative agent of the disease to be the slow-growing Mycobacterium tuberculosis.