Coloured TEM: melanin production in human melanoma

Coloured TEM: melanin production in human melanoma

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This image is part of the feature Secret Life Of The Cell

Credit: SCIENCE PHOTO LIBRARY

Caption: Cancer: malignant melanoma. False-colour transmis- sion electron micrograph (TEM) showing excess melanin produced when a human malignant melanoma has spread to a lymph node. A malignant melanoma is a cancer which originates in the pigment cells (melanocytes) of the skin. Excess pigment in a melanoma is released into the surrounding medium as melanosomes (dark red). In this image, the melanosomes are being engulfed & digested by round or elongated vacuoles called secondary lysosomes (orange). These vacuoles are inside a macrophage, one of the scavenger cells of the immune system. Magnification: x7350 at 6x4.5cm size.

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Keywords: cancer, cancerous, condition, disease, disorder, healthcare, lymph node, malignancy, malignant, medical, medicine, melanin excess, melanoma, melanoma in, skin cancer

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