Doreen Virtue (born April 29, 1958) is an American author and a motivational speaker. She is the founder of Angel Therapy. Virtue has written over 50 books including oracle card oracle decks on the subject of angels and other spiritual topics.
Exogenous infection is caused by organisms not normally present in the body but which have gained entrance from the environment.. A small fragment of bacteria causes disease in humans,and many species colonize in the human body to create an ecosystem know as bacterial flora.
Endogenous antigen. Definition. noun. Antigen that is produced from within the cell as part of normal cell metabolism or when the cell is infected by bacteria or viruses.Supplement. For instance, when the virus infects the cell, antigens are formed and presented on the surface of the cell.ndogenous antigen. Definition. noun. Antigen that is produced from within the cell as part of normal cell metabolism or when the cell is infected by bacteria or viruses. Supplement.