Three major acts canceled Phoenix concerts in the early weeks of 2025, two for health-related issues. Here's why and what fans need to know.

Stingrays and stingarees have venomous spines on their tail that they thrust into a person’s foot or leg after being stepped ...

Actor and musician Requinn Nicollette was left debilitated after losing her sight from ocular shingles, which she believes ...

Meet the creatures that fight back with nature's most savage defenses. You'll find no mercy if you tangle with one of these ...

Ricky Sawyer - whose procedures have resulted in some clients needing emergency hospital treatment - was caught illegally handing out antibiotics by a BBC reporter ...

When your pet heads outside, they can come into contact with some pesky pests. Here are the most common ones to look out for ...

中性粒细胞和巨噬细胞是抵御病原体微生物感染的重要免疫细胞。在病原体入侵时，中性粒细胞率先被招募到感染部位，通过吞噬、产生活性氧（ROS）等方式发挥抗菌作用，同时其释放的 NETs 也备受关注。NETs 由双链 DNA、组蛋白和非组蛋白蛋白质组成，在调节免疫反应中发挥重要作用。巨噬细胞则可分化为 M1 和 M2 两种类型，M1 型巨噬细胞分泌促炎细胞因子，增强免疫反应；M2 ...