| Decrease in the oxygen-carrying
capacity of the blood; indicated by a low hematocrit (Hct) and
hemoglobin (Hb) concentration. |
| Deviation from what is regarded as normal;
congenital malformation; birth defect. |
| Type of lymphocyte especially involved in
the production of antibodies. |
| Type of white blood cell; a type of granulocyte
involved in allergic reactions; normal value: 0.5-2% or 25-100
per microliter. |
| Soft tissue within the bones where blood
cells are manufactured. |
| Test in which a sample of bone marrow cells
is removed from the bone marrow with a needle and examined under
a microscope. |
| Procedure in which bone marrow of the patient
is destroyed by chemotherapy and/or radiation and then replaced
with healthy cells from a compatible donor; also known as Stem
Cell Transplant. |
| A system to remove excess iron from the
blood and tissues. |
| Of long duration; designates a condition
or disease showing little change or of slow progression. |
| Amount or level of blood cells: white cells,
red cells, and platelets in the peripheral blood. |
| Present at birth. |
| Type and cross; test in which the blood
cells of a donor and a recipient are determined to be compatible
or not compatible for a transfusion. |
| Growth factors which promote the proliferation
and maturation of blood cells; chemicals which are produced
naturally by the body and which help to regulate cell growth. |
| A rare pure red blood cell anemia beginning
in infancy and childhood and resulting from the failure of the
bone marrow to produce red blood cells. |
| Percent of different types of white blood
cells in the blood. |
| In genetics, a trait or characteristic that
may be expressed in the offspring even though it is carried
on only one of the homologous (parental) chromosomes. |
| System to secrete; the network of ductless
glands and other structures that elaborate and secrete hormones
directly into the blood stream, affecting the function of specific
target organs. |
| Type of white blood cell, i.e., neutrophil;
involved in allergic reaction; normal value 2-3%. |
| A red blood cell. Etiology: The cause of
a disease. Fetal |
| Type of oxygen carrying molecule present
in the fetus and infant. Forms more than half of the hemoglobin
of the fetus and present in minimal amounts in children and
adults. Abnormally elevated in certain blood disorders. |
| Type of white blood cell; one example is
a neutrophil. |
| Study of the blood. |
| Portion of the blood's total volume that
is made up of red blood cells. Normal values vary: men 45% to
57%; women 37% to 47%; children (depending on age) 36% to 46%.
|
| iron-containing molecules in the blood that
imparts the color to blood; combines with oxygen from the lungs
and carries it to the body's cells. Normal values for men: 14
to 16 g/dl; women: 12 to 14 g/dl; children: 12 to 14 g/dl. |
| Incomplete or underdevelopment of an organ
or tissue. |
| A common, often asymptomatic disorder characterized
by elevated blood pressure persistently exceeding 140/90 mm
Hg in adults; and for children, exceeding what is normal for
the child's age. |
| White blood cell; includes granulocytes,
lymphocytes, basophils, and eosinophils. |
| A needle is inserted into the liver and
a sample taken to determine iron liver stores. |
| A white blood cell formed in lymphoid tissue
throughout the body, e.g., lymph nodes, spleen, thymus, tonsils,
and sometimes in bone marrow. |
| Abnormally large erythrocytes. |
| Large cells in the bone marrow from which
pieces break off to form platelets. |
| Low neutrophil (poly) count. |
| Type of white blood cell that fights infection;
also called polymorphonuclear leukocyte (poly). Normal values
depend on age but are generally 50-60 percent of 4,000 to 10,000
in number. For those under age 5, normal values are less than
50%. |
| Having a normal number of cellular elements
in general; not devoid of cells. |
| Normal color of erythrocytes; normal amount
of hemoglobin in each red cell. |
| Loss of bone calcareous matter and increased
bone porosity. |
| Low number of all blood cells. Parvovirus
B-19: The cause of a usually benign disease known as Fifth disease;
in immunocompromised patients, may cause aplastic anemia. |
| Blood cells which form clots thereby preventing
bleeding and bruising. Normal values range from 150,000 to 400,000
per microliter of blood. A count below 50,000 can result in
spontaneous bleeding; a count below 5,000 can put the patient
at risk of severe life-threatening bleeds. |
| A substance that precedes another substance. |
| Those young cells that should normally mature
into red cells; anything that originates or precedes. |
| Oxygen-carrying cell in the blood that
contains the pigment hemoglobin, produced in the bone marrow;
erythrocyte. Counts refer to the number of cells in a microliter
of blood. Normal ranges vary according to sex and age. |
| Number of young red blood cells. Immature
RBCs/Total RBCs x 100% = retic count. |
| Deficiency of reticulocytes in the blood.
|
| A non-invasive machine that uses magnetic
principles to determine liver iron stores. |
| Cell from which platelets, red blood cells,
and/or white cells grow in the bone marrow. |
| Platelet, clotting factor in the blood. |
| Low platelet count. Thymocytes: T cells;
lymphocytes arising in the thymus. |
| Blood cells that fight infection. Normal
values range from 4,000 to 10,000 cells per microliter of blood
but can be greatly altered by factors such as stress, exercise
and disease. |
