TY - RPRT TI - Multisite comparison of CD4 and CD8 T-lymphocyte counting by single- versus multiple-platform methodologies: evaluation of Beckman Coulter flow-count fluorospheres and the tetraONE system. The NIAID DAIDS New Technologies Evaluation Group. AU - K A Reimann AU - M R O'Gorman AU - J Spritzler AU - C L Wilkening AU - D E Sabath AU - K Helm AU - D E Campbell PY - 2000 DO - 10.1128/cdli.7.3.344-351.2000 UR - https://pubmed.ncbi.nlm.nih.gov/10799444/ ID - 10799444 ER -