You will have blood tests performed to check to make sure you do not have a type of infection called the replication-competent retrovirus (RCR). For this test, blood (up to 4 teaspoons each time) will drawn about 1, 3, and 6 months after the T-cell infusion, then once every 6 months for 5 years, and then once a year after that for 10 years.