I'm a student in a field unrelated to biology or medicine, however I very much enjoy reading about it. I just read in Merck Manual that
Human cells vary in size, but all are quite small. Even the largest, a fertilized egg, is too small to be seen with the naked eye.
A very quick google search (caused by basic elementary school biology knowledge) results in Wikipedia article that says The egg cell is typically not capable of active movement, and it is much larger (visible to the naked eye)
Did I misinterpret something here, or I'm reading an unreliable source? Merck Manual was reccommended for learning about these things since it's maintained by MDs so I was just wondering. Thanks!