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.
Some consider the fetus to be a baby at around 16 weeks when you can start to feel the first movements. Others don't consider the fetus to be a baby until the abortion time limit has passed, so around 20-24 weeks. Some only consider the fetus to be a baby once he or she is born. All of the above information is correct but leaves out one crucial medical fact.