A pathogen causes a disease while a contagion spreads a disease by direct or indirect contact.
An antigen is a body's system for creating antibodies to fight infection. A pathogen is an infectious agent (or germ).
Pathogen is the agent or the culprit that causes a disease while the disease is the end result of what a pathogen did. Example: HIV virus is the pathogen while AIDS is the disease state that can result from high HIV viral load.
A carrier is an organism that harbors and transmits a pathogen without getting sick, while a vector is an organism that transmits a pathogen from one host to another. Carriers may not show symptoms but can pass on the pathogen, whereas vectors are necessary for the pathogen to be transmitted between hosts.
Opsonization involves an antibody binding to a pathogen itself while neutralizing invovles an antibody binding to a toxin, AKA something the pathogen produces.
Commensal. For example: These two organisms are in a commensal relationship.
Pathogen is the agent or the culprit that causes a disease while the disease is the end result of what a pathogen did. Example: HIV virus is the pathogen while AIDS is the disease state that can result from high HIV viral load.
Cattle egrets are commensal animals. They consume the insects that cattle and livestock disturb while they are grazing in pastures.
An antigen is a substance that can trigger an immune response in the body, such as proteins on the surface of bacteria or viruses. A pathogen, on the other hand, is a type of antigen that can cause disease in the host organism by invading and damaging tissues. Not all antigens are pathogens, but all pathogens are antigens.
A pathogen is an organism that causes disease (they are PATHOlogy GENerators). A pathogen that does not cause disease is an oxymoron.
Commensal organisms like bacteria on the skin make it more difficult for harmful bacteria to grow. However, the commensal organisms can be harmful to people with depressed immune systems. They could also cause inflammation if there are too many of them.
The time between a pathogen invasion and the first symptoms appearing is called the incubation period. During this period, the pathogen is actively multiplying within the body before symptoms become noticeable.