It is carried in air droplets so enters through the airway and then into the lungs where it thrives on warm, damp environment.
Active acquired immunity occurs when you get an infection by a pathogen (bacteria, virus) and your body responds and removes the pathogen and also your body makes "memory" cells. These cell remember this pathogen and when it enters your body again you remove it immediately. You are now immune to it. You usually don't notice this.
Technıcally, a pathogen ıs anythıng that trıes to attack your body, so that bacterıa ıs the flesh-eatıng pathogen.
A virus is a non-living pathogen that invades body cells to replicate and cause infection.
Once the body activated, killer T cells it recognize pathogen and destroy them. In response that will create memory B cells and T cells specific to a certain pathogen, so if it ever came back it will be killed immediately.
pathogen
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When a pathogen enters the body, it first encounters the body's physical and chemical barriers, primarily the skin and mucous membranes. These barriers provide a first line of defense by preventing the pathogen from entering deeper tissues. If the pathogen breaches these surfaces, it then encounters immune cells and proteins in the innate immune system, which act quickly to identify and combat the invader.
Mycobacteria.
reproduce. The more there is the more likely they are to survive x
It is called a pathogen! it carries the bacteria fugus disease or whatever else into the body!
Yes, contagious diseases are infections. Infections are occur when a pathogen (germ) enters the body and reproduces.
Respiratory tract
If a pathogen enters the human body, the first line of defense, which includes physical barriers like skin and mucous membranes, attempts to block its entry. If the pathogen breaches these barriers, the second line of defense—a non-specific immune response involving white blood cells and inflammatory responses—activates to eliminate the intruder. If the pathogen persists, the third line of defense, which is the adaptive immune response, is triggered, leading to the production of specific antibodies to target the pathogen. Failure of these defenses can result in infection and disease.
The pathogen tries to infect the body. The defense mechanism of the body resists the entry of the pathogen. If pathogen succeeds the infection is established and the body becomes sick.
A very broad answer to a very broad question... A "pathogen" as defined by a dictionary would be, "any disease-producing agent, esp. a virus, bacterium, or other microorganism." First- a "pathogen" in drinking water will cause nothing unless someone or something drinks the water or if the "pathogen" enters the body/host by some other means... Second- even once the "pathogen" enters the body it may still cause nothing, as the quantity of the "pathogen" must be sufficient to cause the would be disease... Third- because a "pathogen" could be any one of millions of things, what disease would be caused by your hypothetical "pathogen in the drinking water" would depend entirely on what it is... You should seriously consider being more specific about your question. If you are interested in a specific pathogen and the associated disease, please try again.
When a pathogen enters the body, it first encounters the body's physical and chemical barriers, primarily the skin and mucous membranes. These barriers serve as the first line of defense, preventing pathogens from penetrating deeper into the body. Additionally, secretions like saliva, mucus, and tears contain antimicrobial proteins that can neutralize or inhibit the growth of pathogens. If these barriers are breached, the immune system's innate responses come into play to fight the infection.
Active acquired immunity occurs when you get an infection by a pathogen (bacteria, virus) and your body responds and removes the pathogen and also your body makes "memory" cells. These cell remember this pathogen and when it enters your body again you remove it immediately. You are now immune to it. You usually don't notice this.