Leukocytes are not limited to blood. They occur elsewhere in the body as well, most notably in the spleen, liver, and lymph glands. Most are produced in our bone marrow from the same kind of stem cells that produce red blood cells. Others are produced in the thymus gland, which is at the base of the neck.
Once your baby is past 3 months than that is no longer a newborn. But that isn't considered a toddler either yet. They are a baby up until they start to walk then they are called a toddler. Source(s): My opinion. chicken2008 Â· 6 years ago. Thumbs up. 0. Thumbs down. 0. Comment.
Your Baby from 4 to 6 Months: Personality! The sight of you makes your 4-month-old baby smile, and he may fuss when you leave, both signs that his social development at 4 months is right on track. Learn about his emotional and language development, and see what other 4 month old milestones your baby should have! By Holly Robinson from American Baby.