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.
An advantage of the Sativa over the Indica is the sweet taste of the buds, fruity and perfumed smell and the smoke it emits is usually smooth and easy to inhale. It will take them about 10 to 16 weeks, from the onset of flowering, to fully mature. Comparatively, Sativa has long maturity period, longer than that of the Indica. The flavors vary from the range of being earthy to sweet to fruity. This kind of strain will quickly grow to be a very tall plant even reaching the heights of 20 feet in a single season.