This reduces the effect of waves and swell. Off-shore winds produce non-surfable conditions by flattening a weak swell. The team had to wait several days in Teahupoo for the waves to swell. Swelling and clumping is a CPE where host cells swell significantly. When large amounts of air leak into the tissues, the face can swell considerably. The lips may temporarily swell during sexual arousal due to engorgement with blood. That can cause the cell to swell. The weather was fair and the sea calm with a 2-metre swell. They also swell inwards, partially blocking the entrance to the vagina. Feet may also swell and redden. The neck may swell in part due to enlarged lymph nodes. Endoplasmic reticulum degrades and mitochondria swell up and eventually disintegrate. Shackles were riveted closed about the ankles, which caused Powell's feet to swell considerably. Using the wrong fluid can cause seals to swell or become corroded. If not treated promptly, the affected tissue can swell and become infected.