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Cell-wall structure of Gram-positive and Gram-negative bacteria.
Eyespots on the wings of the Citrus Swallowtail (Papilio demodocus) are part of its defense
Risk of death from motorcycle accidents (dashed lines) and passenger accidents (solid lines) per 100
Men who are at risk for heart disease and report work-related stressors are at greater risk of death ...
Positive and Negative Punishment
The lifetime risk for schizophrenia varies with the degree of relationship to an affected individual