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.
1 He's 17 months old and not walking, or he's 7 months and hasn't smiled yet. 2  Your child doesn't seem to understand or respond when you talk. 3  Somewhere between 8 and 12 months, most babies will point to their favorite stuffed animal if you ask them where it is, or at least look in the right direction.