sentences:  He died in Orsay on 8 August 1908, his sixty-second birthday.He was especially interested in the relationship between host and parasite in nature (both plants and animals), and used the term "parasitic castration" to define sexual characteristic changes in the host as a result of the parasite, even when the sex glands of the host are not directly involved.He is credited for providing a description of "Giardia lamblia", a gastrointestinal protozoan parasite that is named after himself and Czech physician Vilem Dusan Lambl (1824–1895).