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Technicians in white coats work on blood and tissue samples inside biosafety cabinets.

The footage shows technicians at work in a laboratory whose shelves are lined with coloured tubes and boxes. One specialist pipettes samples into tubes while others take readings at their instruments.

Much of the work takes place inside ventilated biosafety cabinets, with gloves and lab coats protecting both staff and samples.

Health experts point out that laboratory testing is a fundamental step towards accurate diagnosis and treatment decisions.

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