freckles and pigmented acne scars, are of serious concern to women. Their treatment usually involves the use of medicines or medicinal cosmetics containing depigmenting agents or skin-whitening agents. For example, hydroquinone and 4methoxyphenol are used as topical therapies for hyperpigmentation disorders. Active ingredients available for medicated whitening cosmetics in Japan include vitamin...

To the article “Analysis of Performance and Updating a Rectifying Column for Hydrofined Diesel Fuel Stabilization,” by A. S. Bondarenko, M. Kalimgulova, N. Samoilov, Vol. 56, Nos. 11-12, pp. 873–879, March, 2021

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We describe CD4 counts at 6-month intervals for 5 years after combination antiretroviral therapy initiation among 12 879 antiretroviral-naive human immunodeficiency virus-infected adults from Latin America and the Caribbean. Median CD4 counts increased from 154 cells/mm(3) at baseline (interquartile range [IQR], 60-251) to 413 cells/mm(3) (IQR, 234-598) by year 5.

Cover photo: A vigilant yellow-bellied marmot (Marmota flaviventris) at the Rocky Mountain Biological Laboratory, Colorado, USA. Blumstein et al. (pp. 879–887) report that the time allocated to anti-predator vigilance in marmots is heritable and is weakly correlated with locomotor performance. Interestingly, faster marmots allocate more time to vigilance while slower marmots allocate less time....

This article reviews recent developments in selected imaging technologies focused on the cardiovascular system. The techniques covered are: ultrasound biomicroscopy (UBM), microSPECT, microPET, near infrared imaging, and quantum dots. For each technique, the basic physical principles are explained and recent example applications demonstrated. (Circ Res. 2006;98:879-886.)