Palbociclib was purchased from MedChemExpress (MCE, CA, USA) [11 (link)]. Ten milligrams of Palbociclib was dissolved in 4.1323 ml sterilized triple-distilled water (concentration: 5 mmol/ml) and then was subpacked into 1.5 ml EP tubes and stored at -80°C. When used, the mother liquid was diluted with complete medium to 1 μΜ and 2 μM, respectively. Antagonists of CCR5, TAK-779, was purchased from MCE (CA, USA).
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