|MadSci Network: General Biology|
...it helps. I tried researching this on my own, and this is what I came up with: Human red blood cells appear clear in the center because they have little cytoplasm. This increases surface area to carry more hemoglobin, thus increasing oxygen carrying capacity, which is the main purpose of RBC. Please note: I am NOT lazy. I am not using this to copy an answer. I will be honest: this is for a science lab. I have looked far and wide through many sources. I promise I will not copy any portion of your writing if my question is answered.
Re: Explain the reason human red blood cells are clear in the center and why...
Try the links in the MadSci Library for more information on General Biology.