Bone Ossification

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Structural diagram of oxytocin, showing its cyclic peptide backbone, disulfide bond, and labeled residues.
Posterior Pituitary Gland

Oxytocin

by Rachel Howard and Kishan Pankhania

Diagram illustrating three types of endocytosis: phagocytosis forming a vacuole around a large particle, pinocytosis forming vesicles, and receptor-mediated endocytosis forming a coated vesicle.
Cell Signalling and Molecular Physiology

Endocytosis and Exocytosis

by Rosamund Nicholson

Diagram contrasting extracellular and cytoplasmic compartments, showing potassium concentrations, charge distributions, and opposing diffusion and electrical gradients across a dashed boundary.
Synapses

Resting Membrane Potential

by Aleksandra Lasica and Matan Bone