https://my.clevelandclinic.org/health/body/22971-antibodies
Learn what antibodies are, how they protect you from foreign substances and what types of antibodies exist. Find out how monoclonal antibodies, COVID antibodies and thyroglobulin antibodies can affect your health.

https://www.britannica.com/science/antibody
Antibodies are protective proteins produced by the immune system in response to foreign substances, called antigens. Learn how antibodies work, how they are produced by B cells, and how they recognize and neutralize antigens.

https://en.wikipedia.org/wiki/Antibody
Antibodies are heavy (~150 kDa) proteins of about 10 nm in size, arranged in three globular regions that roughly form a Y shape.. In humans and most other mammals, an antibody unit consists of four polypeptide chains; two identical heavy chains and two identical light chains connected by disulfide bonds. Each chain is a series of domains: somewhat similar sequences of about 110 amino acids each.

https://www.medicalnewstoday.com/articles/what-is-an-antibody
Antibodies are disease-fighting proteins that recognize and bind to foreign invaders, such as bacteria and viruses. Learn about their structure, types, location, function, and how to test for them.

https://www.ncbi.nlm.nih.gov/books/NBK546670/
Antibodies are naturally produced by plasma cells within the human body to mediate an adaptive immune response against invading pathogens. There are five predominant antibodies produced, each specialized to execute certain functions. Antibodies gain the ability to identify a diverse range of antigens by genetic recombination of different elements of its structure and while the affinity for a

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_(Boundless)/42%3A_The_Immune_System/42.13%3A_Antibodies_-_Antibody_Functions
Antibodies, part of the humoral immune response, are involved in pathogen detection and neutralization.

https://www.britannica.com/science/antibody/Antibody-structure-and-classes
Antibody - Structure, Classes, Function: Each antibody molecule is essentially identical to the antigen receptor of the B cell that produced it. The basic structure of these proteins consists of two pairs of polypeptide chains (lengths of amino acids linked by peptide bonds) that form a flexible Y shape. The stem of the Y consists of one end of each of two identical heavy chains, while each

https://www.newscientist.com/definition/antibodies/
Antibodies are proteins that recognise and bind to specific microbes or proteins in the body. They can help fight infections, provide immunity, or be used as therapies or research tools.

https://med.libretexts.org/Bookshelves/Anatomy_and_Physiology/Anatomy_and_Physiology_(Boundless)/20%3A_Immune_System/20.6%3A_Humoral_Immune_Response/20.6B%3A_Structure_and_Function_of_Antibodies
An antibody, also known as an immunoglobulin, is a large Y-shaped protein produced by B- cells and used by the immune system to identify and neutralize foreign objects such as bacteria and viruses. Each tip of the "Y" of an antibody contains a paratope (a structure analogous to a lock) that is specific for one particular epitope (similarly

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/7%3A_Animal_Structure_and_Function/42%3A_The_Immune_System/42.3%3A_Antibodies
Describe the structure and function of antibodies. Discuss antibody production. An antibody, also known as an immunoglobulin (Ig), is a protein that is produced by plasma cells after stimulation by an antigen. Antibodies are the functional basis of humoral immunity. Antibodies occur in the blood, in gastric and mucus secretions, and in breast milk.

https://www.genome.gov/genetics-glossary/Antibody
An antibody is a protein component of the immune system that circulates in the blood, recognizes foreign substances like bacteria and viruses, and neutralizes them.

https://www.livescience.com/antibodies.html
Antibodies are specialized, Y-shaped proteins that bind like a lock-and-key to the body's foreign invaders — whether they are viruses, bacteria, fungi or parasites. They are the "search

https://biologydictionary.net/antibody/
Antibody Definition. An antibody is a specialized defense protein synthesized by the vertebrate immune system. These small structures are actually made of 4 different protein units. The ends of the molecule are variable, and can be adapted to bind to any molecule. The shape is determined by the antigens in the system which are causing damage.

https://www.ncbi.nlm.nih.gov/books/NBK513460/
Immunoglobulins (Ig) or antibodies are glycoproteins produced by plasma cells. B cells are instructed by specific immunogens, for example, bacterial proteins, to differentiate into plasma cells. Plasma cells are protein-making cells participating in humoral immune responses against bacteria, viruses, fungi, parasites, cellular antigens, chemicals, and synthetic substances.[1]

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4159104/
In the setting of infectious diseases, antibody function refers to the biological effect that antibody has on a pathogen or its toxin. Thus, assays that measure antibody function are differentiated from those that strictly measure the ability of an antibody to bind to its cognate antigen. Examples of antibody functions include neutralization of

https://www.thoughtco.com/antibodies-373557
Learn how antibodies are produced by B cells and recognize specific antigens in the body. Find out the different types and functions of antibodies and their roles in the immune system.

https://www.news-medical.net/health/What-is-an-Antibody.aspx
What is an Antibody? Antibodies are large Y-shaped proteins. They are recruited by the immune system to identify and neutralize foreign objects like bacteria and viruses.

https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_2e_(OpenStax)/07%3A_Unit_VII-_Animal_Structure_and_Function/7.10%3A_The_Immune_System/7.10.04%3A_Antibodies
An antibody, also known as an immunoglobulin (Ig), is a protein that is produced by plasma cells after stimulation by an antigen. Antibodies are the functional basis of humoral immunity. Antibodies

https://teachmephysiology.com/immune-system/adaptive-immune-system/antibodies/
Learn about antibodies, the Y-shaped glycoproteins produced by B-cells that recognise and bind to antigens. Find out how antibodies are classified by heavy chain type, how they mediate different effector functions and how they are involved in immunity and disease.

https://microbenotes.com/antibodies/
Learn about antibodies, protein molecules produced by B-lymphocytes that recognize and bind to antigens. Explore their forms, structure, functions, isotypes, and applications in immunology and research.

https://www.ncbi.nlm.nih.gov/books/NBK27144/
Antibodies are the secreted form of the B-cell receptor. An antibody is identical to the B-cell receptor of the cell that secretes it except for a small portion of the C-terminus of the heavy-chain constant region. In the case of the B-cell receptor the C-terminus is a hydrophobic membrane-anchoring sequence, and in the case of antibody it is a hydrophilic sequence that allows secretion.

https://medlineplus.gov/ency/article/002223.htm
Learn what an antibody is, how it is produced, and what it does. Find out how antibodies can protect the body from harmful substances and what happens when they attack healthy tissue.

https://www.verywellhealth.com/antibody-isotypes-3132614
Learn about the five types of antibodies (immunoglobulins) produced by your immune system to fight disease and infection. Find out how antibody tests can diagnose various diseases based on their unique structure.