A lymphocyte is a type of white blood cell. White blood cells are part of your immune system and help your body fight off diseases, including infections and cancer. There are two main types of lymphocytes â B cells and T cells.
There are the inner, rocky planets and then the outer gas planets. Venus is a rocky planet, as are Mercury, Earth and Mars. The terrestrial (rocky) planets are the 4 inner (closest to the sun behind the asteroid belt) rocky worlds in the Solar System: Mercury, Venus, Earth and Mars. The Gas giants, well, they are Jupiter, Saturn, Uranus, and Neptune. The gas and rocky planets are separated by the asteroid belt.
A large planet having a thick gaseous atmosphere but no solid surface due to a low abundance of rock or other solid material. Jupiter, Saturn, Uranus, and Neptune are gas giants.