Sigma-Aldrich. “U937 Cell Line Human,” 2010. http://www.sigmaaldrich.com/catalog/ProductDetail.do?D7=0&N5=SEARCH_CONCAT_PNO%7CBRAND_KEY&N4=85011440%7CSIGMA&N25=0&QS=ON&F=SPEC

has been cited by the following article:

• TITLE: Effect of Vitamin K1 on Cell Growth Inhibition and Apoptosis on the U937 Cell Line

  AUTHORS: Tesha Blair, Hugh A. Miller III

  KEYWORDS: Vitamin K1; U937 Cells; Cell Growth Inhibition; Apoptosis; Human Cancer

  JOURNAL NAME: Journal of Cancer Therapy, Vol.3 No.2, April 24, 2012

  ABSTRACT: This experiment was conducted in order to verify the role of Vitamin K1 as a cell growth inhibitor on the U937 cell line. This experiment was performed in two parts—one with a lesser concentration of Vitamin K1, and the other with a range of concentrations from low-to-high. Through the remaining number of U937 cells, as well as cell areas, it was concluded that the presence of Vitamin K1 reduces the number of cancer cells. It was also concluded that as Vitamin K1 concentration increases, so does the frequency and effects of apoptosis.