Equipment and reagents:
1. Inverted phase contrast microscope with a 10× objective lens;
2. Label the tube with the volume scale (conical bottom);
3. Improved Neubauer blood cell counter;
4. Counter cover glass;
5. A pocket tube or.......

The core tips: The quality of boars directly affects the quality of the entire herd. One boar can be allocated 20 or more sows. The genetic influence of boars on offspring is significant. Play the genetic potential of excellent boars.

First, the choice of varieties and appearance c.......

Apricot tree is a kind of fruit tree with vigorous growth on its back. Traditional winter pruning removes these back branches and causes a lot of tree nutrient waste. The author refers to the apple weeping pruning experience, this spring in the growth of apricot trees do a small amount of .......

A bogey eat raw lily.

Fresh day lily contains colchicine, which enters the human body to form oxidized colchicine, which is very poisonous and can be killed by eating 3-20 mg.

Second, avoid eating raw food.

Eat oysters, in which the ginger insects will enter the bod.......

The high-efficient multi-seedling model of loofah, Chinese cabbage and lettuce formed in Libao Town of Hai'an County has high land utilization rate, high yield, and high efficiency. In 2009, it was listed as one of the 22 efficient infrastructure horticultural demonstration projects in.......

Nowadays, in the minds of consumers, fruit juices have long been on the top of carbonated beverages and lactic acid beverages because of their natural, nutritious, and inexpensive nature, and are increasingly favored. As it entered the homes of ordinary people, due to some misunderstanding.......

Many people think that eating before going to bed is not good for the body. Especially for women who care about their body, they feel that eating before going to bed is not easy to digest and can affect their body shape. In fact, some foods that are eaten before going to bed can help to re.......