There are 29 genetically distinct collagens present in animal tissues. Collagen types I, II, III, V and XI self-assemble into D-periodic cross-striated fibrils. Here the D is approximately 67 nm and there is characteristic axial periodicity of collagen.
Marble Hill is a fourth-class city in central Bollinger County in Southeast Missouri in the United States. Located at the intersection of State Highway 34 and State Highway 51, it is the largest city in Bollinger and serves as the county seat. The population was 1,477 at the 2010 census.
From Wikipedia, the free encyclopedia. Marble Rock is a city in Floyd County, Iowa, United States, along the Shell Rock River. The population was 307 at the 2010 census. On July 24, 2014, Marble Rock will host 10,000+ RAGBRAI riders with ribs, chicken, pie, a beer garden and music from the Chocolate Crackers.