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 people consider a fetus to be a baby from the moment of conception. Others consider the fetus to be a baby roughly 10 days after conception at implantation, where the fertilised egg implants in the lining of the womb.Other consider the fetus to be a baby at around 6 weeks, when there is a visible heart beat.ome 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.