Leukocyte movement from blood to the site of tissue damage or infection involves , leukocyte movement toward the blood vessel wall; , the movement of leukocytes between endothelial cells of the blood vessel; and , the movement within the tissue to the site of injury.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?