Comment on abstract, title, references:

1. The aim of the study was clear, as well as the comparing between many types of Cytokine.
2. If someone suggested the title "Cytokines effect on Stem Cell differentiation, proliferation and growth" it would be informative and more relevant to what written.
3. It contains 54 References, most of them wrote after 2002.

Overall strengths of the article and what impact it might have in your field:

We would thank the authors for well done in a general discussion of many Cytokine effects on many types of Stem Cell.

Information and suggestions for what could be done to improve the article:

1. The title could be more relevant.
2. The rewriting can be made some paragraphs stronger than collocation/gathering the facts.
3. Enrichment the information of pluripotency it will add positive value, where only mentioned in the abstract and the conclusion!

Figures/Tables mentioned in the text:

In the case of designed only one table by sequence all types mentioned in the test, It would be more attractive if divided into two regarding effectiveness.