Immune System

Approximately 23 seconds

I believe this response to be wrong and based on the movie "The Number 23", which is fictional and bases it's theme around the 23 enigma which is selection bias at it's best! To the original person who answered, please research your answers before posting. It is people who post without thought and research who destroy the internet's unique use as an overall research tool and make finding the correct answer for something much harder.

The actual answer is that every body is different and therefore as such each individual has a different time for blood to circulate the whole body. For example, someone who has had their legs amputated would have a quicker circulation time than an average healthy adult. Other factors to be considered are age, weight, health, sex, height, activity, anxiety and stress etc. For an average adult at rest it takes almost 1 minute for a red blood cell to travel the circulatory system.

My teacher says it is found in the blood but, it basically meanders around so..... yea

The cellular system is composed of many classes of T-lymphocytes (white blood cells that detect foreign invaders called antigens).

It depends on the pathogen.

If it is a virus, the virus will replicate (reproduce its DNA) inside the cell (known as a host cell). The virus clones will then leave the cell and in doing so, cause the cell to die. When this happens many many times, lot of the cells of a tissue die and the tissue itself will start to fail.

If it is a bacteria, the bacteria release toxins (endotoxins) which kill the cells directly (from outside).

the body sends a message to your white blood cells and those cells try and receive whatever that virus is that is inside of you. T cells also help as a second defense.

IgM

True A+

Presented by APCs as MHC-exogenous peptide complex

If you are allergic to something, you will break out in a rash with red itchy bumps. You may have symptoms like watery eyes, stopped up nose, or swelling. Severe allergic reactions involve swelling inside the bronchial tubes, leading to difficulty breathing and even death.

B cells are a type of white blood cell

Leukopenia.

Naiive B cells are lymphocytes that have not yet been exposed to antigen. Once it can identify a particular antigen, it will undergo production of antibodies and become a mature B cell. Mature B cells are split into two categories: plasma B cells and memory B cells.

Plasma B cells will continue to produce large amounts of antibodies. Memory B cells are stored so that the next time you encounter the same antigen, it can start producing antibodies much quicker because it remembered from the previous encounter.

Actually, it's a combination of Aphova and Hellen's answers. Every medicine has its individual peak absorption time and peak plasma concentration time. This may be impacted by whether the stomach was empty or full when the medicine was swal...

That could come under immunology?

opportunistic infection

true

The three most common are the skin, gastrointestinal tract and respiratory tract

AIDS is caused by a virus called HIV- Human Immunodeficiency Virus.

Melanophages are macrophages which have ingested (endocytosis) melanosomes or melanin. (Weiss et al, 1988; James et al, 1987; Cooper et al, 1986)

Yes, by certain white cells in the blood. Some of these cells produce free floating antibodies while others present their antibodies on their surface receptors. These different systems fight infection by different kinds of organisms.

A non-self antigen is a 'Foreign' cell or chemical which is not naturally found inside the body.

Natural immunity.

Immune System Vaccines are like a mild type of a disease is given to you or your pet and whilst you may feel ill for a day or two it will make you immune to that same disease but it can only be certain diseases.

Acute leukemias develop and progress rapidly, while chronic leukemias develop slowly and have a better prognosis. If someone was diagnoed with leukemia, the blood smear and other tests can indicate if this patient have chronic or acute leukemia.