Biomedical subjects
Publications and source records attributed to J Beall.
Total ophthalmoplegia is a serious complication of internal maxillary artery ligation. Although serious complications of transantral surgery of the pterygopalatine space are rare, they remain a very real possibility and should be considered before undertaking arterial ligation for treatment of posterior epistaxis.
A simple device has been developed for delivering samples into a flow cytometer. Designed with economy, simplicity, and flexibility in mind, this device, having only one moving part, can be used for sample volumes as small as 20 microliter, for virtually any form of cell sample container, and for a wide range of cell concentrations. It consists essentially of a lever-operated disc valve that allows the cell sample to be loaded into a loop of tubing and then to be injected into the cytometer nozzle under pressure from a saline source. The sampler has lifted the maximum analytical throughput of a FACS II cell sorter to better than 120 samples per hour.