184 



THE CELL AND PROTOPLASM 



Fig. 10. Reproduction similar to that of Fig. 8 except that the i^rosthetic group is lactoflavinjjhosphate. 



be conceived as being built into particles exist in these smaller sizes and that these 



which are 50 A in size or larger. sizes were confirmed by osmotic and by 



It was mentioned also that the nltra- diffusion methods. X-ray studies have 



centrifuge has shown that proteins may shown that the protein chain occurs as such, 



Fig. 11. Kei)roduction similar to that of Fig. 8 except that tlie ])rosthetic group is a form of lecithin. 



