In 2009, the NCI removed approximately $130 million of ARRA from the NCI's "Prime Contract" with Science Applications International Corporation (SAIC) to fund tissue accrual and a variety of other activities through the NCI Office of Acquisition. $42 million was available for tissue accrual through the NCI using "Requests for Quotations" (RFQs) and "Requests for Proposals" (RFPs) to generate purchase orders and contracts, respectively. RFQs were primarily used for the collection of retrospective samples from established banks while RFPs are used for the prospective collection of samples.TCGA finalized sample collection in December, 2013, with nearly 20,000 biospecimens.