Editing Ultrastructure (section)

== Biology ==
A common ultrastructural feature found in [[plant]] cells is the formation of [[calcium oxalate]] crystals.<ref>{{cite journal | last1=Prychid | first1=C. J. | last2=Jabaily | first2=R. S. | last3=Rudall | first3=P. J. | title=Cellular Ultrastructure and Crystal Development in Amorphophallus (Araceae) | journal=Annals of Botany | volume=101 | issue=7 | date=2008-03-13 | issn=0305-7364 | pmid=18285357 | pmc=2710233 | doi=10.1093/aob/mcn022 | pages=983–995}}</ref> It has been theorized that these crystals function to store calcium within the cell until it is needed for growth or development.<ref>{{cite journal | last1=Tilton | first1=V. R. | last2=Horner | first2=H. T. | title=Calcium Oxalate Raphide Crystals and Crystalliferous Idioblasts in the Carpels of Ornithogalum caudatum | journal=Annals of Botany | volume=46 | issue=5 | date=1980 | issn=1095-8290 | doi=10.1093/oxfordjournals.aob.a085951 | pages=533–539}}</ref>

Calcium oxalate crystals can also form in [[animal]]s, and [[Kidney Stones|kidney stones]] are a form of these ultrastructural features. Theoretically, [[Nanobacterium|nanobacteria]] could be used to decrease the formation of calcium oxalate kidney stones.<ref>{{cite journal | last=Goldfarb | first=David S. | title=Microorganisms and Calcium Oxalate Stone Disease | journal=Nephron Physiology | volume=98 | issue=2 | date=2004-10-19 | issn=1660-2137 | doi=10.1159/000080264 | pages=48–54| pmid=15499215 | s2cid=29369994 }}</ref>