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Basal cell carcinoma, a frequent type of skin cancer that rarely metastasizes.
The digestive system: functions of the small intestine and large intestine (colon)
The skullcap from Trinil, Java is the type specimen for H. erectus and is about 900,000 years old.
HP-01 wrist instrument, 1977
High stress, by household type (age-standardized), age 18+, Canada, 1994-1995
An unpaired loop at synapsis