Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: Thalassemia patients have a reduced quantity of these cells, which can be measured using the mean corpuscular volume. The schizont phase of malaria is found within these cells. At the end of their lifespan, which is about 120 days, these cells are relocated to the spleen and destroyed. The body condition when a low number of these cells are present is anemia. These cells, which do not have nuclei, gain their color from an iron-containing protein known as hemoglobin. For 10 points, name these cells in the bloodstream, which carry oxygen throughout the body.
Output:
Science