Scientists have uncovered why vaccines can elicit a stronger immune response if they are administered in the same arm.

A fundamental discovery in how the immune system organizes itself to respond better to external threats,” researchers find in study.

Lymph node metastasis was uncommon among clinically node-negative PTC patients without evidence of nodal involvement on USG and CT.

These lumps are lymph nodes or glands that are located all over the body, including behind the ears, and contain immune cells ...