Asteroids are celestial rocky bodies that orbit the sun. It was Sir William Herschel who first coined the term âasteroidâ (Greek for star-like) in 1802. He thought that Ceres and Pallas, discovered in 1801 by Giuseppe Piazzi and Heinrich Olbers respectively, were too small and were remnants of a destroyed planet.
blood cell. n. Any of the cells contained in blood; an erythrocyte or leukocyte; a blood corpuscle. blood cell. n. (Physiology) any of the cells that circulate in the blood. See erythrocyte, leucocyte.
1 Red blood cell (RBC) count: is a count of the actual number of red blood cells per volume of blood. 2  Both increases and decreases can point to abnormal conditions. 3  Haemoglobin measures the amount of oxygen-carrying protein in the blood. 4  Haematocrit measures the amount of space red blood cells take up in the blood. White blood cell (WBC) count is a count of the actual number of white blood cells per volume of blood. 2  Both increases and decreases can be significant. 3  White blood cell differential: looks at the types of white blood cells present.