Experiments examining killer T cells found that fasting shifted them toward using fat for fuel and supported the development of lasting immune memory.Experiments examining killer T cells found that fasting shifted them toward using fat for fuel and supported the development of lasting immune memory.
An observational study of COVID-19 survivors aged 18–59 and 60 or older found weaker responses after inactivated vaccines and subsequent Omicron infection in older…An observational study of COVID-19 survivors aged 18–59 and 60 or older found weaker responses after inactivated vaccines and subsequent Omicron infection in older adults.
Who was studiedPreviously infected younger and older adults, against younger COVID-19 survivors
What changedAntiviral helper T cell responses to non-spike proteins were weaker in older than younger survivors after vaccination and Omicron infection
The catchImmune-cell measurements are not a direct measure of protection against severe illness
In 46 people aged 19 to 79, distinguishing similar sounds engaged cortical regions rather than the hippocampus, while older adults showed memory deficits.In 46 people aged 19 to 79, distinguishing similar sounds engaged cortical regions rather than the hippocampus, while older adults showed memory deficits.
Macrophages, a type of immune cell, occupied 0.73 versus 0.95 times 100,000 square micrometers of plaque area in rapamycin-treated and control mice.Macrophages, a type of immune cell, occupied 0.73 versus 0.95 times 100,000 square micrometers of plaque area in rapamycin-treated and control mice.