The pattern of the ocean rising and falling due to the gravitational pull of the moon
a. tide
b. tidal bore
c. tidal range
d. neap tide
(earth science)

When tissues are injured or infected, chemical signals can be releases that affect the plasma membrane of cells that line the nearby blood vessels. these blood vessels cells (endothelial cells) respond to the chemical signals by displaying a type of glycoproteins on their surface. these proteins will attach to circulating white blood cells bringing them to the site of injury or infection. these glycoproteins would best be described as