Leech Embryo Development

Powerpoint demonstration which shows cell division in leech embryo development.


Powerpoint explains basic mechanisms of neurotransmission in relation to drug abuse. 

Cellular Model System Approach

The cellular model system approach focuses on how drugs affect the communication between cells. The primary way drugs can influence a person’s behavior is by altering the signaling between nerve cells. Because the human brain is made of millions of cells, this approach  uses a research strategy of using a simplified system as a model system. We will use slime mold as a model system, because this very simple organism uses chemical signals to communicate between cells, much as nerve cells do in the brain.  

National Institute for Drug Abuse (NIDA)

The NIDA Goes Back to School campaign is your source for FREE information about the latest science-based drug abuse publications and teaching materials.

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More NIDA Resources for Parents and Teachers

These materials were developed to inform parents & teachers about the health effects and consequences of drug abuse and addiction.