Leukemia is a form of cancer in which lymphocytes divide uncontrollably, often crowding out red blood cells in the blood vessels. Which of the following correctly describes where cancerous lymphocytes could develop and how they would enter the bloodstream?

1. They develop in the lymph nodes and are deposited in the heart.
2.They develop in the lymph nodes and are deposited in the subclavian veins.
3.They develop in the lymph and are deposited in the capillary beds.
4.They develop in the lymph and are deposited in the subclavian artery.