Invaded and ravaged by germs and pathogens every moment of its existence, the human body has developed its own lines of defence. Among the lesser known barriers are the linings of the gut

The immune system comprises of two categories of white blood cells

Immune responses in our bodies are significantly affected by our intestines

A new theory links the origin of sleep to bacteria present in the gut

Oral vaccination may enhance immunological memory

To study the association between ambient air pollutants (AAP) and respiratory symptoms complex (RSC) in preschool children, a cohort of 664 children between the ages of 1 month to 4.5 yr were randomly selected from 28 slums (anganwadi centres) of Lucknow, north India. They were followed up fortnightly for six months.