I just started to work on 2-D proteomics for phosphorylated proteins. I tried to label the proteins with 33P, which gave us really weak signals, so we are thinking to switch it to 32P. Is this a good idea?

Where could I purchase inexpensive and good quality radioisotopes?

We order all our isotopes from Amersham. The price we actually got is much lower than the listed price. I don't know why.

Collection of technicals of mushroom extract:

- Shiitake Mushroom extract
- Maitake Mushroom extract
- Reishi Mushroom extract
- Corilous Versicolor (Mushroom extract)
- Poria Cocos Mushroom extract
- Monkeyhead Mushroom extract
- Oyster Mushroom extract
- Brazil Mushroom extract
- The Beech Mushroom extract
- Cordyceps Sinensis Mushroom extract
- Tremella Fuciformis Mushroom extract
- Agrocybe Aegerita Mushroom extract

Detailes can be found at www.freshes.com.