HJALMARSSON, Barbro, Swedish nurse. The inventor, in the 1970s, of a new procedure for measurement of the sedimentation rate of red blood cells. Rather than collecting the blood and then transferring it to long narrow graduated tubes (time consuming to clean), her method used a longer than usual blood vacuum collection tube. This tube then slotted into a rack or holder stand. In this case the stand was graduated rather than the tube. The whole process was quick and the tube could then be discarded, or the blood remixed and used for other tests. But after 10 years struggle against pharmaceutical companies Barbro got nothing.
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