Some of the more persistent wildlife and animals that visit gardens includes raccoons, deer, moles, rabbits, cats and dogs. One of the best ways to keep wildlife and other animals out of the area is to place plants the animals dislike around the outside of the garden or landscaping.
Home Â» Biology Â» Antigenic shift Antigenic shift Antigenic shift is the process by which two different strains of influenza combine to form a new subtype having a mixture of the surface antigens of the two original strains. Because the human immune system has difficulty recognizing the new influenza strain, it may be highly dangerous.
Antigenic variation refers to the mechanism by which an infectious agent such as a protozoan, bacterium or virus alters its surface proteins in order to evade a host immune response. It is related to phase variation.ntigenic variation is the expression of various alternative forms of antigen on the cell surface. Whereas phase variation is the phenotypic switch that is usually reversible and is referred to as an ON-OFF switch.