Chapter 28 (2/2)

Zhou Wen replied in excitement, “Wow, is that true?”

“Yes, it’s true! Then, the boss seized the opportunity to submit my examination result and your employment information once again. Unexpectedly, the contracts got approved today.”

Wu Yan was truly delighted. Her promotion came from her connection with Zhou Wen this time. In fact, her superiors were happy that they passed her application as well at one go. An opportunity like this was hard to come by.

Judging by the current situation, it would most probably be very difficult for people like Jiang Hexuan, Wei Zhaogong, Dong Wenying, and Xu Jiajia to convert to formal employment in the near future.

The two chatted for a while more, and Wu Yan told Zhou Wen that she would buy him a meal.

Upon hearing that, Zhou Wen hastily commented, “It’s fine, it’s fine. I feel uneasy as soon as I hear talks about having a meal now. Let’s talk about that later on. Moreover, I think that it’s best for us not to disclose this matter to the public in consideration of the feelings of Xu Jiajia, Wei Zhaogong, and the rest. What do you think?”

“Hmm, you’re right. It’s my fault for losing my bearings in elation…”

The two continued to chat for a while more before they hung up the call.

Zhou Wen kept the phone away and turned around to take a glance at the ward.

The old woman held her son’s hand and muttered something as if she was narrating the past events of his childhood to him. Regardless of the son’s age, he was always a child in his mother’s eyes.

Meanwhile, Zhou Wen was jolted back from his surging and exciting emotions to the tear-jerking scene before his eyes.

He took an extended glance at the mother and son inside the ward before he turned around and left the inpatient department.

…

Zhou Wen headed to the big pharmacy nearby and spent 20 RMB to buy the few types of medicinal herbs he needed before he headed back to the laboratory department’s reagent preparation room and began to prepare the necessary reagents.

There were a total of over 20 types of reagents such as EDTA, NaCl, SDS, dextrose solution, sodium diethyldithiocarbamate, PVP, mercaptoethanol, RNase A mother liquor, chloroform, isoamyl alcohol, ethyl alcohol solution, NaAc, and others.

The ratio of buffer solution extracted to every type of reagent was different. Moreover, it had to be carried out according to strict requirements.

Fortunately, Zhou Wen learned about reagent preparation recently. Otherwise, he would be baffled just by trying to prepare the reagents.

After two hours, he was done preparing all the reagents necessary at last.

Later, he returned to the comprehensive laboratory located on the sixth floor.

Wu Yan had already left, so there was not a single person in the comprehensive laboratory.

Zhou Wen brought up the system to take a look. He noticed that the mission was already triggered to begin spontaneously when he was preparing the reagents.

Soon afterward, he began making the Biotype Pain Relief Medication.

Firstly, he extracted the DNA of the medicinal herbs.

Then, he added the extracted buffer solution to a 50ml centrifuge tube that he heated in a 70-degree Celsius water bath.

He cut up 10g of Salvia kiaometiensis leaves he bought and transferred it to a mortar. Then, he added liquid nitrogen to it before he ground it into powder. He immediately added the pulverized leaves to the preheated centrifuge tube. He then shook it profusely until it was even before he submerged the tube in a 70-degree Celsius water bath to maintain its temperature for 30 minutes.

Then, he added chloroform, isoamyl alcohol, ethyl alcohol solution and tilted it upside-down until it was evenly mixed before leaving the solution at room temperature for 10 minutes in order to separate the aqueous phase and the organic phase into layers.

With the upgrade of his biochemistry skill, Zhou Wen had an even more in-depth understanding of organic chemistry reactions such that he was highly proficient in conducting experiments. In addition, he had the help of his Truevision, which allowed him to understand the reaction of every step more thoroughly.

DNA extraction was a trifling matter to him now. It was an utterly infallible act.

The only issue he had now was that it felt slightly unfamiliar to him because it was his first time performing a plant DNA extraction. Hence, it slowed him down a little.

Three hours later, a high concentration sample of Salvia kiaometiensis DNA was extracted.

This was just the beginning.

Next, he extracted the Hygrophila pogonocalyx.

It was the same procedure with the only difference being that he become even more proficient with the process now that it was his second time conducting the procedures. He could work even faster due to his prior experience, such that he had only spent two and a half hours.

After the Hygrophila pogonocalyx, he prepared to continue the extraction process when his stomach began to growl in hunger.

He took a glance at the time and found that it was already half-past eight at night; no wonder.

Yet, Zhou Wen was reluctant to head out for dinner because he still had five more DNA samples to extract.

Also, he still had to perform DNA amplification later, so he did not have much time.

At last, he took out an all-natural uncontaminated apple from the system’s inventory list.

He remembered that oath that he had sworn previously, so he muttered to himself secretly, “This is the last time. Whoever eats it from now on is not a man.”

After hesitating for three seconds, he raised the apple and took two loud, crispy bites and swallowed it instantly before his sense of taste was transmitted to his brain.