Mysterious and powerful, she has gigantic breasts that are constantly swollen, engorged and lactating. The nipples on an engorged breast are flat. The nipples on an engorged breast are flat or inverted. Clitoral erection occurs when the corpora cavernosa, two expandable erectile structures, become engorged with blood. If breastfeeding is suddenly stopped a woman's breasts are likely to become engorged with milk. During erection, the corpora cavernosa will become engorged with arterial blood, a process called "tumescence". For egg production, the female requires its abdomen to be engorged with blood. This may also become slightly engorged with blood, but less so than the corpora cavernosa. When each ascus becomes engorged with fluid it extends outside the perithecium and releases spores. They are massive in size and covered in engorged, tumor-like growths. Cultured fat cells from PLSCR3 knockout mice were engorged with neutral lipids. The face will typically become engorged and cyanotic (turned blue through lack of oxygen). In the Ixodidae, the tick stays in place until it is completely engorged. When a tick is fully engorged it is said to be "replete". Females drop off the host when fully engorged and seek an area to oviposit.