https://www.selleckchem.com/pr....oducts/guanosine-5-t
New ethical problems have also been discovered. Everything must be aligned to the concept of "time is brain".CDK4/6 inhibitors (CDK4/6i) and endocrine therapy are the standard treatment for patients with hormone receptor-positive and HER2 negative (HR+/HER2-) metastatic breast cancer. Patients might show intrinsic and acquired resistance, which leads to treatment failure and progression. Circulating biomarkers have the potential advantages of recognizing patients who might not respond to treatment, monito