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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Cell Biochem Funct. 2009 Jul;27(5):296–308. doi: 10.1002/cbf.1573

Figure 7. The different lots of IL-4 had similar bioactivity as reflected by growth of CTLs.

Figure 7

Cells were cultured at 650,000 cells per ml with different lots of IL-4 at 500 units/ml. The viable cells recovered were counted by Trypan blue exclusion on day 3.