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But blood typing can be complicated by blood transfusions, which are common in donors killed in car crashes or by gunfire.

In courtrooms, especially in Europe, blood typing of mother and child became a method of ruling out putative fathers.

A doctor examined her at Mound Park Hospital, the former Bayfront, and collected samples to send off for blood typing, which was the kind of analysis performed at the time.

Some experiments include mixing chemicals and studying pH levels, DNA extraction, blood typing and studying light refraction.

Ortho-Clinical Diagnostics manufactures and markets donor screening and blood typing products, besides being involved in information management, testing technologies, and automation and interpretation tools.