What does the term "-logous" relate to in medical terminology?

The suffix "-logous" in medical terminology is derived from the Greek word "logos," which means "study" or "discourse." This suffix is often used in various terms to denote a connection to the study or science of a particular field. For example, in the context of medical terms, "-logous" can imply a relationship to a specific type of knowledge or scientific discipline.

In contrast, the other terms provided do not accurately reflect the meaning conveyed by "-logous." The concept of treatment is more directly associated with suffixes like "-therapy," while immunity is typically associated with terms like "immuno-." Protein structure would correlate to several terms related to biochemistry or molecular biology, such as "proteinaceous," rather than "-logous." Therefore, the connection of "-logous" to the idea of study aligns correctly with its etymological roots.