Heat Map Showing Differences in Gene Expression between Primary Tumors and Cultured Cell Lines (image) University of Texas at Austin, Texas Advanced Computing Center Share Print E-Mail Caption Each row is a gene and each column is a tumor or cell sample. In the heat map, red indicates high expression and blue indicates low expression. NHA refers to normal human astrocytes, a star-shaped glial cell of the central nervous system. Credit Amelia Weber Hall, Iyer lab Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.