*You need to have IL-4 at 0,02 ug/ml (or 20 ng/ml). 200 ug/ml (stock) /0,02 ug/ml=10000; this is the dilution you need to do to the stock (1/10000 or 1/100 and 1/100).

*You need to have IL-13 at 0,02 ug/ml (or 20 ng/ml). 100 ug/ml (stock) /0,02 ug/ml=5000; this is the dilution you need to do to the stock (1/5000).

*You need to have ifn-y at 2*10^-5 mg/ml (or 20 ng/ml). 0,2 mg/ml (stock) /2*10^-5 mg/ml =10000; this is the dilution you need to do to the stock (1/10000).

I hope this help you!

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