Blood counting machines aspirate a very small amount of the specimen through narrow tubing followed by an aperture and a laser flow cell. Laser eye sensors count the number of cells passing through the aperature, and can identify them; this is flow cytometry.
In computing, Extract, Transform and Load (ETL) refers to a process in database usage and especially in data warehousing that performs: Data extraction â extracts data from homogeneous or heterogeneous data sources.
ETT Stylet. ETTT stylet is a device that allows the endotracheal tube (ETT) to be stiffened and the shape moulded as desired. References and Links. Foote C, Steel L, Vidhani K, Lister B, MacPartlin M, Blackwell N. Examination Intensive Care Medicine (2nd Edition), Elsevier 2011.