Examlex
List and discuss five factors responsible for the emergence of new pathogens or the reemergence of existing pathogens.
Central Canal
The fluid-filled channel at the center of the spinal cord or in the osteon of bone, providing nutrients and pathways for waste.
Lacuna
A small space, cavity, or depression; in bone and cartilage, lacunae are the spaces that house the cells (osteocytes or chondrocytes).
Canaliculi
Small, channel-like structures in bone tissue that allow for the passage of nutrients and waste materials between blood vessels and osteocytes.
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