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.
If you want to know when to plant beets, itâs best to plant them during cool weather. They grow well in cool temperatures in spring and fall and do poorly in hot weather. When growing beets, plant the seeds 1 to 2 inches apart in the row. Cover the seeds lightly with loose soil, and then sprinkle it with water. You should see the plants sprouting in seven to 14 days. If you want a continuous supply, plant your beets in several plantings, about three weeks apart from each other.