There are many different cell types and sub-types involved in the immune system. Some of the main types include: Lymphocytes: are white cells which circulate between blood and lymph. They play an important role in fighting infection.
After about 50 to 60 days, beets are ready to harvest. Not only can the roots be dug up and chopped to add flavor to a meal, but the greens of the beets can be harvested periodically and put in salads. Given how well these beets fare in different weather conditions, they can be grown several times in a summer.
Size will depend on the variety you grow and at what stage you harvest, but on average roots grow 1 Â½ - 3 inches in diameter. Leaves can spread about 12 inches and grow to about 8 - 12 inches high. Because beets are generally grown as a root crop, they will do fine in either full sun or partial shade.