Wednesday February 25

Here is a link to a different presentation on toxicology. When you look at this presentation or the one from Monday (or in your book) you should be able to identify information about how toxins can impact human health. The categories that you need to understand and describe are:

1. Mutations
2. Cancer
3. Birth Defects
4. Reproduction
5. Environmental Hormones

In addition to the above direct effects, you need to be able to identify potential synergistic effects of these toxins. 

You need to be able to look at the relationship between a dose response curve and LD-50 and LC-50 and how it changes when toxins are combined or compounded.

For those of you that are interested, here is a link to how the dose response curves are calculated for PCB.

Friday is a "News Friday". Please find an article about toxic exposure (read it) and be able to answer the following questions.

1. What is the toxic chemical that is discussed in your article?
2. What is the source of the chemical? (If the article does not mention a direct location, what industry typically uses the chemical?)
3. What are the effects of the chemical on humans?
4. Does the chemical behave differently in humans based on age? on sex? on physical condition?
5. What is the LD50 for the chemical?