Skip to content
In English |
En español
Search
Dictionary of Cancer Terms
Page Options
Print This Page
Quick Links
Director's Corner
Updates from the Director
Dictionary of Cancer Terms
Cancer-related terms
NCI Drug Dictionary
Definitions, names, and links
Funding Opportunities
Research and training
NCI Publications
Order/download free booklets
Advisory Boards and Groups
Information, meetings, reports
Science Serving People
Learn more about NCI
Español
Información en español
Questions about cancer?
1-800-4-CANCER
LiveHelp® online chat
NCI Highlights
Virtual and Standard Colonoscopy Both Accurate
NCI Responds to Hurricanes
The Nation's Investment in Cancer Research FY 2009
Cancer Trends Progress Report: 2007 Update
Past Highlights
Search for
keyword
Starts with
Contains
#
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
extract
(EK-strakt)
In medicine, a preparation of a substance obtained from plants, animals, or bacteria and used as a drug or in drugs.
Previous Definitions:
external radiation therapy
,
external-beam radiation therapy
,
extracorporeal photopheresis
,
extracranial
,
extracranial germ cell tumor
Next Definitions:
extragonadal germ cell tumor
,
extrahepatic
,
extrahepatic bile duct
,
extrahepatic bile duct cancer
,
extranodal
NCI Home
|
Text-Only Version
|
Contact Us
|
Policies
|
Accessibility
|
Viewing Files
|
FOIA
|
Site Help
|
Site Map
A Service of the National Cancer Institute