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One hundred sixty-three cases of osteomyelitis in infants and children were seen at our hospital during the past 15 years. There were twice as many boys as girls. Staphylococcus aureus was the major etiologic agent, being identified in 61% of the cases. Gram-negative bacteria were responsible for only 14 cases (9%). The femur, the tibia, or the humerus were affected in 103 of the 152 patients with single bone involvement. Ostoemyelitis of more than one bone was seen in 11 cases (7%). Associated joint infectin was confirmed in 29 patients. There were no deaths. Surgical drainage was carried out in 81 cases (50%). Ten patients had recurrent or persistent drainage and one developed a Brodie abscess. Of the patients with S aureus osteomyelitis, chronic disease occurred in 19% of those receiving parenterally administered antibiotics for three weeks or less, but in only one patient (2%) of those who received parenteral antibiotics longer than three weeks.

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Hybridization of DNA adsorbed to single-walled carbon nanotubes in solution has much slower kinetics than free solution DNA, and can be detected through a blue shift in the near-infrared nanotube fluorescence. Adsorption of the receptor DNA strand to the nanotube surface is consistent with models of polyelectrolyte adsorption on charged surfaces, introducing both entropic (46.8 cal mol(-1) K(-1)) and activation energy (20.4 kcal mol(-1)) barriers to the hybridization, which are greater than free solution values (31.9 cal mol(-1) K(-1) and 12.9 kcal mol(-1)) at 25 degrees C. The increased hybridization barriers on the nanotube result in exceedingly slow kinetics for hybridization with t(1/2)=3.4 h, compared to the free solution value of t(1/2)=4 min. These results have significant implications for nanotube and nanowire biosensors.