THE LAND: Afghanistan is known for it's mountainous terrain. The huge Hindu Kush mountains form a barrier between the Northern provinces and the rest of the country. This mountain range has also divided Afghanistan int three very different geographic regions known as; The Central Highlands, The Northern Plains, and the Southwestern Plateau.
â Antibody producing B cells develop into plasma cells â¢ Plasma cells only found in lymphoid organs, not in general circulation or lymph â¢ eccentric nuclei and perinuclear halo (clear region under nucleus) â Clonal expansion leads to development of effector cells or memory cells for both T and B events. Memory cells can survive 20 years or
Answer by Pluto8888. Confidence votes 204. Red blood cell's organ system is Circulatory. Red blood cells are produced by bone marrow, which is not an organ, but a tissue found in the hollow interior of bones. Blood cells are suppose to be produced from bone marrow.Bone marrow makes your blood cells, but it isn't considered an organ.nswer by Pluto8888. Confidence votes 204. Red blood cell's organ system is Circulatory. Red blood cells are produced by bone marrow, which is not an organ, but a tissue found in the hollow interior of bones. Blood cells are suppose to be produced from bone marrow.