Myelocyte, known as 有中細胞 (Uchū Saibō) in Japanese, is a supporting character in the anime series 'Hataraku Saibou' (Cells at Work!). Myelocyte represents an immature white blood cell developing into a more specialized cell, such as a neutrophil. In the series, Myelocyte is depicted as eager and earnest, training to become a full-fledged defender of the body. Their role highlights the growth and differentiation of immune cells, showcasing the body's complex defense mechanisms and the hard work behind cellular immunity.