title: Factors affecting the separation of photosynthetically competent chloroplasts in gradients of silica sols.
mesh_terms: D002458:Cell Fractionation / Q000379:methods; D002499:Centrifugation, Density Gradient; D002501:Centrifugation, Zonal; D002736:Chloroplasts / Q000378:metabolism* / Q000648:ultrastructure; D008854:Microscopy, Electron; D010788:Photosynthesis; D010944:Plants; D011092:Polyethylene Glycols; D012822:Silicon Dioxide
chemical_list: D011092:Polyethylene Glycols; D012822:Silicon Dioxide