Webster's New World Medical Dictionary

hurricane supplies
See 
disaster supplies.
Hutchinson-Gilford progeria syndrome
See
progeria.
humerus
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hyaline membrane disease
Synonym for acute
respiratory distress syndrome and respiratory dis-
tress syndrome. See 
acute respiratory distress syn-
drome; respiratory distress syndrome.
hybrid
The result of a cross between genetically
unlike parents. A hybrid is therefore the offspring of
parents who differ in regard to the particular gene
in question.
hybridoma
A hybrid cell used as the basis for the
production of antibodies in large amounts for diag-
nostic or therapeutic use. Hybridomas are pro-
duced by injecting a specific antigen into a mouse,
collecting an antibody-producing cell from the
mouse’s spleen, and fusing it with a tumor cell
called a myeloma cell. The hybridoma cells multiply
indefinitely in the laboratory and can be used to
produce a specific antibody indefinitely.
hydatid mole
See 
hydatidiform mole.
hydatidiform mole
A tumor that forms in the
uterus as a mass of cysts resembling a bunch of
grapes. Hydatidiform moles occur during the child-
bearing years, and they do not spread outside the
uterus. However, a malignancy called choriocarci-
noma may start from a hydatidiform mole. In its
early stages, a hydatidiform mole may look like a
normal pregnancy. Diagnosis is based on a history
of lack of fetal movement, a pelvic examination,
an ultrasound, and a blood test to look for high 
levels of the hormone beta human chorionic
gonadotropin (hCG). hCG in the blood of a woman
who is not pregnant can be a sign of a hydatidiform
mole. Treatment includes removal of the mole by
dilation and curettage (D & C) and suction evacua-
tion and surgery to remove the uterus (hysterec-
tomy). Also known as a molar pregnancy.