For example, an individual can be AB, D positive, and at the same time M and N positive (MNS system), K positive (Kell system), Lea or Leb negative (Lewis system), and so on, being positive or negative for each blood group system antigen.
Nearly every list of easy-to-grow vegetables starts with lettuce, and with good reason: so long as you plant it at the right time, it will grow from seed with little attention. The right time is when the soil is cool, in the spring and fall. In Arkansas, you can plant lettuce seeds from February to April, and again in September for a fall harvest.
Three Timely Tomato Topics: Feeding Seedlings, Adding Calcium & What to do with Horse Manure. Q. I started my own tomato plants this year; they're indoors under lights , and so far so good. I used ' Natural Beginnings Soilless Mix ' as the growing medium, and the package says to start feeding when the seedlings are four weeks old.