EOG8JQ6CD GO:0007156 2/20 homophilic cell adhesion via plasma membrane adhesion molecules biological_process "The attachment of a plasma membrane adhesion molecule in one cell to an identical molecule in an adjacent cell." [ISBN:0198506732] EOG8JQ6CD GO:0005509 2/20 calcium ion binding molecular_function "Interacting selectively and non-covalently with calcium ions (Ca2+)." [GOC:ai] EOG8JQ6CD GO:0005886 1/20 plasma membrane cellular_component "The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins." [ISBN:0716731363] EOG8JQ6CD GO:0016020 1/20 membrane cellular_component "A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it." [GOC:dos, GOC:mah, ISBN:0815316194]