At the beginning of the 19th century, though there had been some advances in medical knowledge, scientists still did not understand what caused disease. However, the production of better quality ...

Scientists were able to identify chromosomes under the microscope as early as the 19th century. But what did it take for them to figure out how important chromosomes really are? Aa Aa Aa The ...

At the beginning of the 19th century, though there had been some advances in medical knowledge, scientists still did not understand what caused disease. Joseph Lister was able to make a much more ...