Members of highly ranked groups can be polluted by coming into contact with bodilysecretions, particularly saliva, of individuals of lower-ranked castes.
社会地位高的人接触到社会地位低的人的身体分泌物，特别是唾液，就会受到污染。
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Members of highly ranked groups can be polluted by coming into contact with the bodilysecretions, particularly saliva, of individuals of lower-ranked castes.
高等级组的成员可能会通过接触低级别种姓个体的身体分泌物、特殊的唾液而受到污染。
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Lactoferrin is a glycoprotein found in bodilysecretions involved in immune defense, the researchers explain in the American Journal of Gastroenterology for May.