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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

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Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Some viruses that cause human diseases. Some viruses that cause human diseases.
The three dimensions of stream structure. The three dimensions of stream structure.
Crystal structure of human topoisomerase I in complex with a 22-bp DNA duplex Crystal structure of human topoisomerase I in complex with a 22-bp DNA duplex
Annotation of a DNA sequence containing part of the human globin gene Annotation of a DNA sequence containing part of the human globin gene
The Anatomic Dimensions of the Vertebral Column (Anterior, Left Lateral, and Posterior) The Anatomic Dimensions of the Vertebral Column (Anterior, Left Lateral, and Posterior)
Staphylococcus aureus cells (yellow) stuck in mucus secreted by human nasal epithelial cells. Staphylococcus aureus cells (yellow) stuck in mucus secreted by human nasal epithelial cells.
Video: Embryonic development - Week 3

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