The team looked at a certain section of mitochondrial DNA extracted from 0.5 - gram bone samples about half the size of a sugar cube. (sciencemag.org)
Albert Zink of Ludwig - Maximilians University in Munich and his colleagues tested the DNA of bone samples from 91 ancient Egyptian mummies and 70 from old Nubia — modern Sudan — to determine if they had suffered from leishmaniasis. (scientificamerican.com)
Bone cryostat sections (7 µm thick) were obtained after decalcification in 3 % nitric acid from 2 to 4 h, depending on the size of bone samples and their brittleness. (journals.plos.org)