Each cementocyte lies in its lacuna (plural, lacunae), similar to the pattern noted in bone. Bone canaliculi are microscopic canals between the lacunae of ossified bone. The lacunae are situated between the lamellae, and consist of a number of oblong spaces. These lacunae are the result of surrounding bone tissue that has been reabsorbed. Because chondrocytes are bound in lacunae, they cannot migrate to damaged areas. Loopholes are distinct from lacunae, although the two terms are often used interchangeably. In cartilage, the lacunae and hence, the chondrocytes, are isolated from each other. All lacunae of the Codex were supplemented. These lacunae also have canaliculi or canals. The spaces they occupy are known as lacunae. The "Notitia" also suffers from significant "lacunae" and numerous errors accumulated from centuries of copying. New construction for the sake of filling in apparent lacunae is not allowed. Osteocyte lacunae are abundant, as with other dinosauromorphs. Some are more partial than others, with lacunae that developed since the 9th century.