| http://www.w3.org/ns/prov#value | - However, many healthcare professionals believe there really is no such thing as "safe sex, and the only way to be truly safe is to abstain as all forms of sexual contact carry some risk.Salicylic acid - a keratolytic drug (a drug that removes the outer layer of skin) that is used to treat various skin conditions.Saline solution - a solution containing sodium chloride (salt).Saliva - mixture of wa
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