Pollen - the culprit in summer fever

People with hay fever have a chance to see the pollen grains, their invisible enemies, thanks to the scanning electron microscope.

Telegraph said, summer fever occurs due to the immune system of people respond to pollen. When pollen particles enter the nose, the cells in the nose release histamine and many other chemicals when they come into contact with pollen, causing red-eye and stuffy phenomena.

Picture 1 of Pollen - the culprit in summer fever

A pollen is between two petals.

Picture 2 of Pollen - the culprit in summer fever

Pollen grains are quite diverse in color, shape and size. In this picture, the pollen of the pumpkin flower is in the middle.

Picture 3 of Pollen - the culprit in summer fever

The pollen grains of the tree Viburnum tinus.

Picture 4 of Pollen - the culprit in summer fever

The birch releases pollen between March and May. The birch flower is one of the leading causes of summer fever in humans.

Picture 5 of Pollen - the culprit in summer fever

The thorns help the pollen of the mallow plant cling to the feathers to spread.

Picture 6 of Pollen - the culprit in summer fever

The pollen grains of silver leaf plants have a sticky crust, so that they can adhere easily to animal hair.

Picture 7 of Pollen - the culprit in summer fever

The head of the geranium of a geranium has tiny pollen grains.

Picture 8 of Pollen - the culprit in summer fever

The pollen grains of lilies.

Picture 9 of Pollen - the culprit in summer fever

Pollen of the olive tree.

Source: Telegraph