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If this contrast does not flow in the correct location, the needle is repositioned, and additional dye is injected until the correct flow is obtained
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To ensure that the spray axis orientation and nozzle location aligned with the corresponding simulated spray parameters, we used specially designed nozzle positioning devices (NPD) inserted at the nostril
It works by stimulating angiogenesis, the formation of new blood vessels, which improves blood supply to damaged tissues
The 50 mg setup is far easier to draw accurately (20 units is a clean, mid-barrel mark) because the higher concentration and larger per-dose amount land on a bigger, more forgiving volume
10.1186/s40168-021-01107-9 304 ZhaoZ.YanJ.HuangL.YangX
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