In a hypotonic solution they swell up and burst, the hmoglobin dissolving in the liquid and colouring it red.
It gains weight in a hypotonic solution, the water current setting towards the point of higher concentration.
We have thus two poles of diffusion of contrary signs, a hypotonic pole at the water drop, and a hypertonic pole at the salt drop.
A bipolar field has a hypertonic pole or centre of concentration, and a hypotonic pole or centre of dilution.
Under the influence of such a hypotonic solution the dry cells rapidly swell up, burst, and are dissolved.
hypotonic hy·po·ton·ic (hī'pō-tŏn'ĭk)
Having less than normal tone or tension, as of muscles or arteries.
Having a lower osmotic pressure than a reference solution.