A brain biopsy, as the name suggests, is a pathological examination of the diseased biopsy of the brain – they then collect a portion of the brain that had been confirmed to be infected by previous imaging tests, and continue to confirm the condition in the simplest, most reliable, and direct way. However, the results of the examination have once again surprised everyone - no signs of inflammation have been detected in the infected brain tissue, and the previously considered staph infection has also been denied.

Nothing was attacking his brain, but something was attacking his brain.

Both Chiba and the physician were in a state of utter confusion, but Grigory suddenly remembered something. "I remember, did they find a piece of crumbled bread on the open open balcony of the patient's ABC family?"

"Yes, a piece of rye bread with a mutilated shape and only a long strip of bread was found on the balcony outside the flower house, and the ergot fungus-related test was negative." Qian Yu immediately replied - in the time just now, he had already recorded all the medical records, and he was already able to open his mouth at this time.

(Author: Examining ergobacteria is because spastic ergot poisoning can produce symptoms such as nervous disorders, blindness, etc.) ）

"Did you bring back the bag of bread?" Grigory asked again. "If you're looking at the parts that don't have mold, you won't find ergot, only the whole bag of bread."

"Didn't bring it back." Qian Yu continued to shake his head.

"Give me a list of blood tests," Grigory thought for a moment, then stood up suddenly. "Forget it, I'll take a trip, and then I'll ...... Prepare a chemical hazmat suit for me and this little one. ”

"Why do you want a child to come with you?" The doctor was taken aback. "Can't I? And there are other young, well-trained doctors here who can physically take care of everything you need. ”

"But they're too big," Grigory shook his head. "Such a lively little kid is just right, and I use it well."

……

An hour later.

"This bag...... Want me to drag? Qian Yu stepped out of the car and looked at the empty big bag in his hand, a little dumbfounded.

"Of course you don't need to drag it," Grigory said, glancing at him, walking ahead. "Dragging it will destroy what's inside, and I need you to carry it - it can't touch the ground."

"So how many things are we going to pack?" Qian Yu felt that the whole person was not good, and asked helplessly. "Not one of them, right?"

"Quite possibly."

Under this exchange, the two of them wore full-body hazmat suits and walked in through the main entrance, and finally arrived at the house where patient ABC was: they had the key, so it was easy to get in.

The whole house is a typical place where a family of three can live comfortably - after entering the living room from the entrance, the dining room, master bedroom, guest bedroom and living room toilet are arranged on three sides of the living room, and the living room itself has an enclosed balcony.

"Let's come in order," said Gregory, leading Chifeather into the bathroom. "When you see something that might be adulterated with impurities, it alerts me – forget about common brands that can only be in and can't get out, for example......" he said, pointing in the direction of the sink. Check the back of the sink for mold, then take away the cups, towels and hair dryer on it, hand sanitizer is not needed after confirming that it is hand sanitizer - we know the composition of that thing very well, we don't need to check it again. ”

"Do towels need to be checked?" Chiba asked as she checked the back of the sink for mold — it turned out it wasn't.

"Have you fed the dogs?" said Grigory, just pulling up the back of the toilet and glancing at it. "If there really was anything, we should have detected it in someone's face a long time ago."

After such testing, the two went to the dining room - the master bedroom and the guest bedroom were relatively low priority, because if there were pathogenic factors in these two places, there was no reason for a family of three to be infected at the same time, but rather that the parents were infected significantly faster or the children were infected significantly faster.

But when it comes to the progress of infection...... Why is it that D, who does not live here, is significantly faster infected? Is it because his body is more vulnerable to the disease for some reason, or is the disease simply transmitted by D to the ABC trio? But if that's the case, why did it only spread to the three of them, but not to the others? None of the relatives who accompanied D day and night had an accident, why did these patients who had been here for a few days have an accident?

After this inference, only the former is more plausible - for some reason, the development of a specific unknown disease in D's body is more rapid.

"Alright, this is the dining room—" Gregory said, looking in the direction of the refrigerator. "Look for the rye bread you mentioned earlier, and then go to the kitchen and see."

"Roger," Chiba nodded, and began to walk in the direction of the cafeteria, taking a 360° view - the auxiliary unit was enough to provide enough dynamic vision in this case to complete the monitoring of the surroundings. "Ah...... Got it. ”

With that, Qian Yu walked through the dining room, climbed from a bench in the kitchen to the cupboard, and picked up four bags of black bread from it. "Three and a half bags, and about 43 pieces......"

"Pay attention to check the expiration date and whether it is moldy." Gregory took a few leftovers out of the refrigerator and put them into the test tubes in his hand.

"There is one pack that has half of it left from about a month and a half ago, and the other three packs are all half a month old." Qian Yu said this, rummaging through the bread piece by piece. "Half a pack of bread slices are normal, nothing abnormal."

"Well, then rule it out—" Grigory snapped back as he said this. "Wait, you're saying the remaining half pack is a month and a half ago, and the other three are half a month old?"

"Yes......" Chiba nodded. If it's the same frequency, it means they've eaten about ...... in the past month. 36 slices of bread? It's a bit slow, and if it were me, I'd probably rather buy a pack in more than ten days than buy so many at once. ”

"Or rather, it's probably not for them......" Grigory suddenly showed a somewhat subtle expression. Come with me - let's go to the flower room. ”

The location of the flower room is isolated from the other rooms - you need to go from the master bedroom to the outside balcony before you can come to the flower room from the outside. And right on the balcony, Gregory's footsteps stopped.

"Oh......" Gregory looked at a few gray spots on the ground, a look of surprise on his face.

——————

Well, let's guess what the title means this time