Parasites are annoying things in the world and they don't bring any benefits to the host. In an era of underdeveloped medical conditions, the death toll caused by parasitic infections worldwide is as high as millions of every year.
Parasites under the phylum are the most typical of the entire parasite population. Most of them are small and have a cylindrical body, which looks like a reduced version of snakes. The species of nematode is very complex. There are more than 125,000 species known to humans. Most of them have parasites. are not only humans, but even plants may be their parasites.
In thousands of years of evolution, ancient nematodes have long adapted to the earth's ecosystem. Hot, drought, high temperature, high salt, and nematodes can be seen in all environments in nature. In the cold Antarctic region, nematodes can also find their own way of survival.
Unlike viruses that cannot survive independently, nematodes can survive in the natural environment. Before entering the host, they feed on microorganisms such as bacteria, algae , and wait for the opportunity to maintain their lives. Once they enter the host, they begin to reproduce vigorously and seize nutrients from the host's body.
roundworm is a typical representative of nematode animal , and it is also a terrifying existence that makes people feel scary. In the 1990s, about 1 billion people in were infected with roundworms in the world, and East Asia and China were the hardest hit areas of roundworm infection. In the era when ascariasis was high, ascaria eggs were everywhere.
roundworm eggs that do not enter the body are not very scary. can kill the eggs if the high temperature exceeds 65 degrees . As long as you persist in cooking at high temperatures with , ascariasis is basically unfavorable for you. However, the economic conditions at that time were poor, the water purification facilities were incomplete, and people did not have a sound awareness of hygiene. Sewage from the upstream areas can easily enter the downstream through the flow of groundwater. The water people fetch in the river, although the surface is clean, has a high chance of containing roundworm eggs. Moreover, Ascariasis is a typical zoonotic disease . Ascariasis eggs will also exist in animal feces. The folk remedy of "eating raw eggs" that Chinese people believe in is easy to eat ascariasis eggs attached to the surface of the eggs into their bodies.
The magic weapon for roundworms lies in the cuticle layer wrapped outside the roundworm eggs . It can ignore the corrosion of the human stomach acid, easily enter the intestine through the peristalsis of the stomach, and start a journey of the larvae to travel around the human body. In the comfortable small intestine, the roundworm eggs quickly remove the protective shell and hatch into small larvae. The roundworms are very small at this time. They can easily drill into the small blood vessels in the intestinal wall and participate in the human circulation with the blood. They can also crawl out of the human mouth when they sleep.
In the process of circulation, the roundworms gradually grow up, and gradually he will find that there is no small intestine comfort everywhere in his body. It is the instinct of animals to seek profit and avoid harm. After having a goal, the roundworms will go downstream, return to the small intestine to camp, and start a parasitic journey of insect growth
. Within 12 to 18 months of adulthood, each female can ovulate in one day
"Astrodiatin" allows Chinese people who are troubled by roundworms to see the dawn . The ingredients contained in the "Astrodiatin" package can effectively paralyze. Ascaris prevent roundworms from attaching to the human intestines and thus being excreted from the body.Based on this, Chinese and Soviet scientists developed pagoda candy with a cute appearance and a sweet taste, which became a high-end snack that children praised for for a time.
However, " Artemisia mount " is a plant that only survives in Arctic Circle . It is extremely rare. For a period of time, "artemisia mount mount" was only used in a very small range. It was not until Weifang successfully planted "artemisia mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount mount
With the breakdown of Sino-Soviet relations, the Soviet Union withdrew the purification equipment and related technologies that aid my country in a very short time. The production of pagoda sugar was once deadlocked, and my country's insect-killing industry also stagnated.
The "artemisia antelope" growing in the ground cannot be stored, so I can only watch them rot in the soil.
my country's scientific researchers did not sit idly by and studied the purification technology of "artemisia ascaris" day and night, and finally let the pagoda sugar appear in people's sight a few years later. This time it is our own pagoda sugar. In the "
Third Parasite Disease Investigation Report" released in 2018, the total infection rate of the parasite infections that my country has focused on screening has dropped to below 6%. It can be said that the ascaris that has plagued China for thousands of years has basically become a thing of the past.
Of course, at this time, the shadow of Baota Candy, which was once popular all over the country, has already been no longer visible. With the advancement of technology, the new antiworming drug has begun to be used, and Baota Candy also stopped production after 1985 and withdrew from the stage of history.
#I want to go to headlines# #Toutiao Creation Challenge#
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-