Examlex
Devise an efficient method for preparing p-nitrobenzoic acid from toluene.
Immune System
The body's defense against infectious organisms and other invaders, comprising various cells, tissues, and organs that work together to protect the body.
Joint Membranes
Layers of tissue that line the joints, providing lubrication and support to facilitate smooth movement.
Adult Skeleton
The complete framework of bones in an adult human, comprising 206 bones.
Bones
are the rigid organs that constitute part of the vertebrate skeleton, providing support and protection for the body's organs.
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