Wampum Wampum Wampum is a traditional shell bead of the Eastern Woodlands tribes of American Indians. It includes the white shell beads fashioned from the North Atlantic channeled whelk shell and the white and purple beads made from the quahog or Western North Atlantic hard-shelled clam. It was used by the northeastern Indian tribes as a form of gift exchange, and the colonists adopted it as currency in trading with them. Eventually, the colonists developed more efficient methods of producing wampum, which caused inflation and ultimately its obsolescence as currency. Wampum was often kept on strings like Chinese cash. Before European
Shell-less chick embryo culture the globe. Scientists designed drug delivery tests in mammalian embryos to treat degenerative diseases. It was implemented in India to scrutinize glucose-induced deformities in chick embryos. Shell-less chick embryo culture Shell-less chick embryo culture is the process of growing chick embryos "in vitro", without their protective egg shells, for scientific observation. Chick embryos and other avian embryos have been biological models to visualize the developmental stages of embryos for education and to instigate embryological manipulations. Using this technique, observations can be made, whether it is a induced-malformation caused due to effect of teratogens or the route of viruses inoculations such