French researchers from Grenoble Alpes University and Aix-Marseille University have developed an automated lens-free microscopy technique for counting and telling apart red and white blood cells within cerebrospinal fluid. Cerebrospinal fluid, gathered through a spinal tap, should be clear and have few, if any, blood cells within it. Patients with meningitis, due to inflammation and disruption of the membranes enveloping the brain, have white blo...