I just need somebody to explain in plain english what "Immune Modulation" is. Google doesn't help at all, it just directs me to bunch of science research papers!

Check this site. Although it's trying to sell an immune modulator, it seems to offer a brief explanation about how it works.

http://www.rivexpharma.com/therapeutic_imunovir.html

how did the ancient Mesopotamians build irrigation systems

First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.

Second, since this is not my area of expertise, I searched Google under the key words "Mesopotamia irrigation" to get these possible sources:

http://www.learner.org/interactives/collapse/mesopotamia.html
http://www.geology.ucdavis.edu/~cowen/~GEL115/115CH17oldirrigation.html
http://www.waterencyclopedia.com/Hy-La/Irrigation-Systems-Ancient.html
http://i-cias.com/e.o/mesopotamia.htm

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

I hope this helps. Thanks for asking.

Certainly! Immune modulation refers to the process of modifying or regulating the immune response. It involves techniques or substances that can alter the activity of the immune system, either by enhancing or suppressing its function. This modulation can be beneficial in various situations, such as treating autoimmune diseases (where the immune system mistakenly attacks the body's own cells), managing allergies, preventing organ transplant rejection, or even boosting the immune response against infections or cancer.

To explain it in simple terms, think of the immune system as a security system in your body. Just like a security system can be adjusted to be more sensitive or less sensitive, immune modulation works in a similar way. It helps to fine-tune the immune response, making it appropriate and efficient in different situations.

Now, if you're interested in delving deeper into the science behind immune modulation, you may want to explore specific research papers or articles. But for a basic understanding, the explanation above should give you a good starting point.