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.
ETL and Business Intelligence ETL is an important part of today's business intelligence (bi). It is the IT process from which data from disparate sources can be put in one place to programmatically analyze and discover business insights.