Alois Lametschwandtner, Bernd Minnich
The cardiovascular system is the first system to develop and to function. It supplies tissues and organs with oxygen, nutrients, hormones, immune competent cells and others and deliberates them from waste products and metabolic heat. Many attempts were made to gain insights into its three-dimensional structure by injecting air, liquids, waxes or hardening substances.
ఈ కథనాన్ని భాగస్వామ్యం చేయండి
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