1. The gameplay consists of navigating a dungeon using an innovative portal system . 2. At 20 weeks of gestation, the hypophyseal portal system has developed. 3. A portal system is used as transport between areas later in the game. 4. Examples of such systems include the hepatic portal vein and hypophyseal portal system . 5. Unqualified, " portal venous system " often refers to the hepatic portal system . 6. These comprise the core functionality of the portal system . 7. Its APIs also allow integration with OSS / BSS, external provisioning and other portal systems . 8. The schistosomulae then migrate to the hepatic portal system of the liver to mature into adults. 9. This vascular relationship constitutes the hypothalamo-hypophyseal portal system . 10. :: : The article wsa Hypophyseal portal system and the edits were reverted as not having sources.