Does a lymphocyte have nucleus?

Yes, lymphocytes have a nucleus. Lymphocytes are a type of white blood cell that are part of the immune system. They are found in the blood, lymph nodes, and other lymphoid tissues. Lymphocytes have a nucleus that contains DNA, which is the genetic material that controls the cell's activities. The nucleus is surrounded by a nuclear membrane, which protects the DNA. Lymphocytes also have cytoplasm, which is the jelly-like substance that fills the cell. The cytoplasm contains organelles, which are small structures that perform specific functions within the cell. Lymphocytes have several different types of organelles, including mitochondria, ribosomes, and endoplasmic reticulum. Mitochondria produce energy for the cell, ribosomes produce proteins, and endoplasmic reticulum helps to transport materials within the cell.