Acquired immunity
Inmunidad adquirida
Immunity is the term used to define antibodies in the system, which fight off infection or toxins; acquired immunity is caused by exposure to a disease or infectious antigen.
Adenitis
Adenitis
A general term referring to the inflammation of a gland or lymph node. When it specifically involves the lymph nodes, it is known as lymphadenitis.
Adenoids
Adenoides*
Lymphatic tissue at the far back of the nose that traps and destroys pathogens in children. After age 5, the adenoids shrink and practically disappear as the body develops other ways to fight germs.
*Generally uses the feminine article: Las adenoides.
Allergen
Alérgeno
Something that causes an allergic reaction, like pollen or
food.
Anaphylaxis
Anafilaxia
A severe allergic reaction to a substance that can be life-
threatening, caused by a flood of immune chemicals that
shock the body.
Anemia
Anemia
Red blood cell or hemoglobin deficiency characterized by
weakness and pale skin.
Angioedema
Angioedema
Deep skin swelling caused by allergies or hereditary factors, affecting areas like the face, genitals, hands, or feet, sometimes accompanied by hives.
Antibody
Anticuerpo
Primary molecule responsible for fighting infection or toxins, produced by B cells; they bind to the foreign substance or antigen and disable it.
Antigen
Antígeno
A foreign substance or toxin that is harmful to the body and stimulates an immune response.
Autoimmune disease
Enfermedad autoinmune*
A variety of conditions in which the body’s immune
system attacks itself.
*También usada: Enfermedad autoinmunitaria.
B cells
Células B
These cells are a type of lymphocyte and responsible for
making antibodies.
Biopsy
Biopsia
The removal of a small tissue sample for microscopic examination to diagnose diseases, such as cancer, or to investigate abnormal tissue.
Bone marrow
Médula ósea
The spongy substance in the center of the bones that is
responsible for producing stem cells that later become mature blood cells.
Complete Blood Count (CBC)
Conteo sanguíneo completo*
Complete blood count is a blood test to measure the different components that make up the blood in order to identify a wide range of disorders like infection or anemia.
*También usada: hemograma completo o recuento sanguíneo completo.
Dendritic cells
Células dendríticas
Immune system cells that take antigens and present them to T-cells for destruction; they are the messengers between the different parts of the immune system.
Diffuse large B-cell lymphoma
Linfoma difuso de células B grandes
A type of cancer affecting the white blood cells that are responsible for making antibodies.
DNA
ADN*
A material in the body that self-replicates; it makes up the chromosomes and carries genetic information.
*DNA stands for deoxyribonucleic acid.
Flare-up
Rebrote
A sudden eruption or worsening of the symptoms of a disease, especially after being in remission.
Hemoglobin
Hemoglobina
A protein containing iron in red cells that transports oxygen to all the body’s organs.
Histamine
Histamina
A chemical released by cells in allergic or inflammatory reactions, which cause muscle contractions and capillary
dilation.
(Human immunodeficiency virus) HIV
VIH
Human immunodeficiency virus. HIV happens when the body’s immune system attacks T cells, which decreases immunity. Untreated, it can lead to AIDS, which is severe loss of cellular immunity and can be life- threatening.
Hodgkin’s lymphoma
Linfoma de Hodgkin
Also known as Hodgkin’s disease, this is a type of cancer
in the lymphatic system characterized by abnormal
overgrowth of cells, which then spread to other parts of
the body.
Immune system
Sistema inmunitario
The system in the body that protects against infection,
foreign substances, tissues, and cells.
Immunization
Vacunación
The process of making individuals resistant to infectious
diseases, generally referred to as a vaccine.