Abstract:
A method is provided for studying capillary circulation utilizing intravital microscopy. The method comprises providing an intact living Salmonid or other Teleost alevin with yolk sac attached in a small water filled plastic bag or tube for immobilizing the fish fry. Thereafter there is injected into the yolk sac, a fluorescent dye complex and tracer FITC-DX (MW 150,000 daltons) and the absorption of the injected material into the systemic circulation of said living Salmonid or Teleost alevin tracked by means of fluorescent microscopy. The method can be used for carrying out toxicological pharmacological, physiological, embryological, oncological, pathological, etc. studies.