Yuan Fang saw that Xiao Lu's expression was a little wrong, and asked, "What's wrong?" What's the problem? ”

Xiao Lu secretly looked at the three brothers of the Mo family, lowered her voice and said, "Brother Yuan, Sister Jiang's wound seems to have signs of infection, I'm not sure, you should take a look for yourself." ”

Yuan Fang was stunned when he heard this, then walked to Jiang Chengjia's hospital bed with a frown, carefully uncovered the gauze, and sure enough, there were signs of redness and swelling on the edge of the knife edge, and a little viscous white pus flowed out. Asked some questions, Yuan Fang's brows furrowed even tighter, from all kinds of indications, Jiang Chengjia's wound was indeed infected, which was the last thing Yuan Fang wanted to see, for so long, Yuan Fang, Xiaomei, Qin Cao and they had many surgeries, but there was not a single case of postoperative infection, so that Yuan Fang mistakenly thought that there was no such problem in this world, but it turned out that no matter what was absolute, Jiang Chengjia's wound infection caught Yuan Fang a little off guard.

Seeing that Yuan Fang's expression was wrong, Mo Lao Er asked worriedly: "Brother Yuan, is your sister-in-law okay?" ”

Yuan Fang reluctantly smiled and comforted: "It's okay, don't worry." "Yuan Fang didn't dare to tell the truth, wound infection is almost no different from a terminal illness in this world, and there are very few people who can survive the catastrophe, and Yuan Fang really has no experience to appease the Mo family brothers.

Yuan Fang gave Xiao Lu a look, Xiao Lu followed Yuan Fang out of the ward, the two found a corner where no one was, and without waiting for Yuan Fang to speak, Xiao Lu preemptively said: "Brother Yuan, Doctor Qin and Doctor Ye have already thought of another way." ”

Yuan Fang was stunned and asked, "What about them?" ”

Xiao Lu pointed to a separate hut in the distance and said, "What kind of penicillin are they getting from, which is said to be a medicine for infections." ”

Yuan Fang pulled Xiaolu and left: "Let's go, let's take a look." In fact, Yuan Fang didn't report any hope, although penicillin can treat infection, but it is not so easy to make penicillin, Yuan Fang taught Qin Cao the method of refining penicillin, Qin Cao tossed for a long time without success.

Pushing open the door, seeing the busy people in the room and the bottles and cans neatly stacked on several large tables, Yuan Fang was a little dumbfounded, he didn't expect that Qin Cao and them would actually make a decent appearance in such a short period of time, and it seemed that the work of refining penicillin was not a day or two.

Seeing Xiaolu and Yuan Fang coming in, Qin Cao hurriedly asked people to close the door, and then pointed to Doctor Ye and the others who were lying on a few beds inside, made a silent gesture, and leaned in front of Yuan Fang and whispered, "How is it?" Second sister-in-law Jiang's condition has deteriorated again? ”

Yuan Fang nodded, pointed to the rows of glass jars on the table and asked, "You got all of these?" ”

Qin Caoyu said proudly: "Well, that's right, according to the method you taught, we have done it a few times, although the first few times have failed, but this time with the addition of teachers and Dr. Chen, I am very confident that we can succeed." ”

Yuan Fang didn't touch the glass jars with lids, but walked to the side to check those strange utensils, these things were very familiar to him when he didn't see them for the first time, because these things were all made by Qin Cao according to the drawings he designed.

Qin Cao looked a little excited, explaining the refining process while introducing various tools, and Xiao Lu on the side also listened very carefully.

First of all, Qin Cao and the others first made a solution of the culture medium from the water of washing rice and boiling potatoes, divided it into small bowls of the same container, and then put the green plum in it, and after a week, extracted the medicinal ingredients from the propagated green plum. During this period, Qin Cao also extracted enough paste-like concentrated water from patients with other wound infections and cultured them in agar medium, and divided them into several equal portions and put them in small bowls with the lid of the bag for later use.

After that, Dr. Ye and they prepare a wooden barrel with a lid and a water outlet at the bottom, dig a small hole in the lid that can be inserted into the funnel, gather all the culture liquid and filter it with a funnel and filter cotton, add vegetable oil after filtration and stir evenly, through these steps, the water in the bucket will be divided into three layers, the top is a fat-soluble substance dissolved in oil, the middle is an insoluble substance that is insoluble in water and insoluble in oil, and the bottom is a water-soluble substance dissolved in water, because penicillin is a water-soluble substance, so just take out the water in it. (There is a drain hole at the bottom of the barrel)

Next, remove the impurity from the penicillin solution, put the boiled and sterilized toner powder in the jar, inject the freshly extracted penicillin solution into it, and stir again.

Then the toner will absorb the penicillin into a thin sludge, and then put the toner sludge into a glass container, (there is a smaller opening under the glass container, which is connected to the rubber tube, and stretch into another container such as a bowl) and inject distilled water, and the impure substance will come out.

Next, pour in acidic water made of vinegar, penicillin is a weak acid, will not dissolve in acidic water, through this step to further remove impure alkaline substances, (the bottom of the bottle is replaced with a new container containing penicillin, the rubber tube below is clamped with a clamp to control the flow rate, as slow as possible) Finally, pour in alkaline soda, so that penicillin will dissolve from the toner, and what flows out from below is a high-purity penicillin solution.

Because the concentration of the penicillin solution is not uniform, the extracted penicillin solution is divided into several equal parts to verify whether there is any effect (select a solution with sufficient concentration).

On several agar media containing concentrated water (staphylococcus) extracted from the patient, use a small piece of paper (paper with better water absorption) dipped in penicillin solution and put it in the middle of the medium with a small piece of paper, and make a one-to-one mark, such as marking No. 1 on the lid of the medium and No. 1 on the lid of the bowl where the solution is dropped, and so on, and then close the lid and wait for several days.

If there is no change after a few days, it means that the penicillin solution is not working, on the contrary, if there is a blank circle around the paper, it means that the penicillin solution has dispersed the germs, that is, the penicillin is effective.

Now, the penicillin they got is in the final test stage, and it has reached the last day, and when the time comes, it will be possible to verify whether the penicillin they have refined is effective and whether this effort can be successful. There is no mistake or omission in the methods and steps, Yuan Fang keeps nodding his head, whether it can succeed or not, Yuan Fang is also looking forward to it, and it is very urgent, which is related to Jiang Chengjia's life, and it is also related to saving more people's lives.

As a doctor, Yuan Fang can only do his best for other patients and do his best to obey the fate of heaven, but for Jiang Chengjia, Yuan Fang must do his best, although he doesn't want to say anything discouraged, but Yuan Fang has to make two preparations, and he can't pin all his hopes on the penicillin he got out this time, and a two-pronged approach is the right way.