In the study, patients randomly assigned to receive IL-2 plus standard antiretroviral therapy had mean CD4+ T-cell counts that increased from 428 cells per cubic millimeter
of blood (mm3) at baseline to 916 cells/mm3 at month 12.
The recruits also showed immune system damage by HIV: All had CD4-lymphocyte counts of between 200 and 500 cells per cubic millimeter
To be eligible for the study, a person must be HIV-infected and in reasonably good health, be 13 years of age or older and have a CD4+ T cell count between 50 and 350 cells per cubic millimeter
Last fall, preliminary findings hinted that AIDS patients taking the drug zidovudine (AZT) have a better chance of prolonging their survival if their levels of certain immune cells, called CD4, stay above 50 cells per cubic millimeter
of blood (SN: 11/4/89, p.
Currently, HIV-infected children do not receive such treatment until their blood levels of CD4 T-lymphocytes fall below 500 per cubic millimeter
The eight people who developed B-cell lymphoma in his study had shown fewer than 50 CD4 T-lymphocytes per cubic millimeter
of blood for at least a year.
Between 1979 and 1989, the researchers studied 162 pregnant women with lower-than-average platelet counts -- less than 150,000 platelets per cubic millimeter
In March 1987, the Food and Drug Administration approved AZT for people with advanced AIDS and for people infected with the AIDS-causing virus, HIV, who have fewer than 200 CD4 T-lymphocytes per cubic millimeter
At just nine cubic millimeters
, it's the size of a Vitamin C tablet, but it's solar powered, it has an internal battery and radio, and it is equipped with its own processor called the Phoenix (Figure 1).
The active part of the harvester that enables the energy conversion occupies just 27 cubic millimeters
The machine can cut to within 2 microns accuracy and remove 5 cubic millimeters
per minute from metals and non-metals.