Texas Center for Proton Therapy brings innovative cancer treatment to Dallas-Fort Worth. By Claire St. Amant, The Influentials-News-CultureMap Dallas.cheduled to start accepting patients in 2016, the $105 million center is breaking ground in Las Colinas on May 15 thanks to Texas Oncology. Proton Therapy is a relatively new form of radiation treatment that uses a proton beam to damage the DNA of cancer cells.
A coral reef is made of thin layers of calcium carbonate. Coral polyps form a living mat over a calcium carbonate skeleton. Stony corals (or scleractinians) are the corals primarily responsible for laying the foundations of, and building up, reef structures.
Similarly, what about coquina...a rock made entirely of seashells? Shells are made of mineral matter, but they aren't minerals any more than teeth are. Finally, we have the exception of obsidian. Obsidian is a rock glass, in which little or none of its material has gathered into crystals. It is an undifferentiated mass of geological material, rather like slag but not as colorful.