Free variables and bound variables. For bound variables in computer programming, see Name binding. In mathematics, and in other disciplines involving formal languages, including mathematical logic and computer science, a free variable is a notation that specifies places in an expression where substitution may take place.
HPV virus infection and natural treatment with dietary supplements, risk of vaccine by Ray Sahelian, M.D. December 28 2014. Genital HPV infection is a sexually transmitted disease (STD) that is caused by human papillomavirus.HPV is the name of a group of viruses that includes more than 90 different strains or types.PV infection and cervical cancer Genital human papilloma virus, the most common sexually transmitted disease in the United States, is associated with cervical cancer in women, and penile cancers in men. The infection is asymptomatic until a malignancy develops.
PUVA is an ultraviolet light therapy treatment for eczema, psoriasis, graft-versus-host disease, vitiligo, mycosis fungoides, large-plaque parapsoriasis and cutaneous T-cell lymphoma using the sensitizing effects of the drug psoralen.he most significant complication of PUVA therapy for psoriasis is squamous cell skin cancer. Two carcinogenic components of the therapy include the nonionizing radiation of UVA light as well as the psoralen intercalation with DNA.