After a baby is born and the umbilical cord is cut, some blood remains in the blood vessels of the placenta and the portion of the umbilical cord that remains attached to it. After birth, the baby no longer needs this extra blood. This blood is called placental blood or umbilical cord blood: 'cord blood' for short.
The easiest way to tell indica vs sativa is to look at the leaves. A true sativa is a tall, scraggly looking plant with wiry stocks and thin leaves. In contrast, indica plants are short and bushy. Indica leaves are usually broad and full. Sativas are native to the warm climates of Mexico, Central America, and Southeast Asia.
A. sativa, or the common oat, is a popular cereal grain that has been eaten for at least 3,000 years. Although this is one of the main uses for this plant, various parts of the plant, such as the young seed and the oatstraw, are nutritive and have nervine qualities, and are thus a favorite amongst herbalists for supporting the nervous system.