Immunology

Summer thunderstorms can leave asthma-sufferers breathless

As the weather heats up, many are looking forward to getting outside for some fun in the sun. But for asthma-sufferers, the summer season can present dangerous conditions through asthma triggers that many are unaware of, ...

Pediatrics

Signs and symptoms of asthma

Asthma is a global issue. It's estimated that more than 334 million people around the world have asthma. It's a chronic disease that makes it hard to breathe. Asthma often starts in chil dhood, but can develop in people of ...

Immunology

Itchy eyes and a runny nose? It could be climate change

Researchers with the Rutgers Environmental and Occupational Health Sciences Institute have simulated how climate change will affect the distribution of two leading allergens—oak and ragweed pollens—across the contiguous ...

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Pollen

Pollen is a fine to coarse powder containing the microgametophytes of seed plants, which produce the male gametes (sperm cells). Pollen grains have a hard coat that protects the sperm cells during the process of their movement from the stamens to the pistil of flowering plants or from the male cone to the female cone of coniferous plants. When pollen lands on a compatible pistil or female cone (i.e., when pollination has occurred), it germinates and produces a pollen tube that transfers the sperm to the ovule (or female gametophyte). Individual pollen grains are small enough to require magnification to see detail.

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