The term 6-month-old sleep regression indicates a change in the sleeping pattern of babies of that age. However, this is nothing to worry about and a reason to celebrate since it is a milestone.

Here are signs to look for that your baby is facing sleep regression and tips on what you can do to help. What Causes a ...

Using a mouse model in which tumors show a growth-regression-recurrence pattern, we investigated the mechanisms for down-regulation of cytotoxic T lymphocyte–mediated tumor immuno-surveillance.