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Did you know?
Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.
Menstrual cycle summary based on a 28-day (average) menstrual cycle.
Changing leaf area: (a) following rainfall ocotillo plants of the Sonoran Desert develop leaves and
Plants
Masters and Johnson’s Four-Phase Model of the Sexual Response Cycle
Shapes of cells found in the brain.
A free-running circadian sleep–wake cycle 25.3 hours in duration. Despite living in an unchanging ...