Surface markers provide insurance against possible separation from the boat. (caradonna.com)
First, we wanted to determine whether the observed regional gradation of expression of cell surface markers of pluripotency was reflected in patterns of pluripotency gene expression, and second, we wanted to compare these results, obtained from cells subjected to minimal manipulation, to those from cells that were separated by flow cytometry in subsequent experiments. (journals.plos.org)
Along with your basic scuba equipment, you'll learn to use various surface marker buoys and floats with lines and reels. (padi.com)