EntityQ1239684· pop 16· linked from 50 articlesDonald A. ThomasSign in to saveAmerican astronautRecent publications · Crossref5 total works indexedAnalysis of Relative Gene Expression Data Using Real-Time Quantitative PCR and the 2−ΔΔCT Method · 2001 · cited 160,589xThe PRISMA 2020 statement: an updated guideline for reporting systematic reviews · 2021 · cited 76,882xU-Net: Convolutional Networks for Biomedical Image Segmentation · 2015 · cited 57,336xSTAR: ultrafast universal RNA-seq aligner · 2012 · cited 49,587xUCSF Chimera—A visualization system for exploratory research and analysis · 2004 · cited 43,718xvia Crossref · CC0ConnectionsNASAConceptNASA Astronaut CorpsEntityCategories1955 birthsAmerican astronautsCase Western Reserve University alumniCleveland Heights High School alumniCornell University College of Engineering alumniEngineers from ClevelandLiving peopleLockheed peopleSpace Shuttle program astronautsTowson University faculty