Dr. Spies was an authority in the study of nutritional diseases.

Palaeoepidemiology is the study of ancient diseases and their causes.

He was influential in the study of tropical diseases.

The study of such diseases was not very modern after the vigorous campaigns for asepsis five hundred years ago.

However, Amish are willing to participate in studies of genetic diseases.

Its research has helped establish Israel as an important center for the study of genetic diseases among inbred peoples.

Early in his career, he began a study of parasitic diseases.

Molecular machines will aid the study of diseases, yet they will make understanding disease far less important.

For example, paediatrics is the study of diseases that affect children.

The technique has been adopted in studies of diseases like cancer.