The compression method for determining the surface force.
D000818:Animals; D001696:Biomechanical Phenomena; D002462:Cell Membrane / Q000502:physiology; D002469:Cell Separation / Q000295:instrumentation / Q000379:methods; D005306:Fertilization; D008433:Mathematics; D010063:Ovum / Q000502:physiology*; D011312:Pressure; D012617:Sea Urchins; D013215:Starfish; D013997:Time Factors