Transition Zone Collection

Steppe-desert border, satellite image. North is at top. Arid areas of desert rock are brown, while grassy steppe areas are green. A small area of desert sands (yellow) is seen at far centre right

Cervical thickening, light micrograph C015 / 6167
Cervical thickening. Light micrograph of a section through the thickened mucous membrane (dark purple, left) of a cervix (neck of the womb). Normal epithelium is at right

Cervical thickening, light micrograph C015 / 6168
Cervical thickening. Light micrograph of a section through the thickened mucous membrane (dark purple, right) of a cervix (neck of the womb). Normal epithelium is at left

Prostate gland anatomy, artwork
Artwork of the anatomy of the prostate gland showing three glandular regions: peripheral zone (PZ) making up 70% of the gland and surrounds the urethra; central zone (CZ)

Earths internal structure, artwork
Earths internal structure. Cutaway artwork showing various subdivisions and layers from the Earths crust down to its iron core (depth of 6371 kilometres)

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