Nurturing Life Sciences
#Id: 9444
#Id: 8902
#XL - T Zoology
#Id: 8650
#Id: 9306
There are about 90 million rod cells in the human retina, and each contains about 4x107 molecules of rhodopsin that are very densely packed in the membrane disks.
#Id: 8138
#XL - Q Biochemistry
#Id: 9415