An injection of a concentrated salt solution into the circulatory system would result in

An injection of a concentrated salt solution into the circulatory system would result in crenation of the red blood cells.
Crenation is a feature of red blood cells. A normal human red blood cells are round, with an indented center, crenation of red blood cells happens as the result of the process of Osmosis. After that the shape of red blood cells shrink, have notched appearance.

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An autotrophic protist - they can perform photosynthesis and mainly consist of unicellular algae. they can be divided into number of systematic group according to the shape of their cell and the type of photosynthetic pigments they use.