Glossary

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hepatic portal system

Subject: 

  • Life Sciences

a system of veins which carries blood from the digestive tract to the liver.

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Subject:
Life Sciences

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bilateral symmetry
Subject:
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the right and left halves of bilaterally symmetrical organisms are mirror images of each other...

independent variable
Subject:
Life Sciences

the factor in an investigation that is under the control of the investigator.

acquired immune deficiency syndrome (AIDS)
Subject:
Life Sciences

a disease caused by the human immunodeficiency virus (HIV).

receptors
Subject:
Life Sciences

nerve cells that receive stimuli.