virus-free plants
virus-induced gene silencing
virus-infected cells
virus-like particles
virus-positive patients
virus-specific CD8+ T cells

virus/acquired immunodeficiency syndrome
virus type
virus type I
virus vaccine
virus variants
virus vectors
viruses

viruses isolated
vis
vis spectra
viscera
visceral adipose tissue
visceral adiposity
visceral afferents

visceral disease
visceral endoderm
visceral fat
visceral hypersensitivity
visceral influences
visceral involvement
visceral leishmaniasis

visceral metastases
visceral obesity