Abstract
Label-free quantitative analysis of the cardiovascular structure and function in wild fish is highly important and still unsolved problem. We developed a robust algorithm for bright field microscopy data processing, which allows reliable detection and quantification of circulatory system across the whole animal. We verified this technique by in vivo experiments on broad whitefish (Coregonus nasus) embryos. Calculated morphofunctional features of heart and vessels are quite specific due to low temperature embryonic development of this fish, and correspond well to the reference data obtained by ex vivo techniques. This research highlights the feasibility of non-invasive cardiovascular imaging and measurements valuable for behavioral, environmental, toxicological, drug discovery and many other studies.
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