The second phase of the Human Microbiome Project reports on microbial composition in prediabetes, inflammatory bowel disease, and pregnancy.

The results suggest the virus could severely alter brain development in infants infected after birth, but blocking a signaling protein early on might ease certain symptoms.

Macrophages play numerous roles within tumors, leaving cancer researchers with a choice: eliminate the cells or recruit them.

Scientists are beginning to unravel the ways in which we develop a healthy relationship with the bugs in our bodies.

After an initial wounding, genes needed for repair remain ready for action.

Immune-like cells in the central nervous system are now recognized as key participants in the creation and maintenance of persistent pain.

The acute pain that results from injury or disease is very different from chronic pain.

Small trials using younger donors and elderly recipients hint that mesenchymal stem cell transfers might reduce frailty. 

Exosomes produced by macrophages in fatty tissue influence insulin sensitivity in distant cell types, a study finds.