That they are in solution in the plasma is well known,-that they are in a solid or precipitated form in the tissues is also true,-and that the tissues are supplied from the blood is also evident,-because the blood is the only part that receives supplies of material direct from the food taken and digested.
"Report on Surgery to the Santa Clara County Medical Society"
Joseph Bradford Cox
The central drop merely supplies the necessary material, and should have a concentration but slightly less than that of the plasma, so as not to set up its own lines of diffusion.
"The Mechanism of Life"
Stéphane Leduc
Suppose, for instance, the plasma of the rootlets has an osmotic pressure of six atmospheres, corresponding to that of a 9 per cent.
"The Mechanism of Life"
Stéphane Leduc