- UID
- 1542685
- 在线时间
- 小时
- 注册时间
- 2023-4-21
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
发表于 2023-10-14 17:21:40
|
显示全部楼层
P1 科學家卻疑惑T感染力強甚至能穿越阻礙感染到大腦,但沒什麼感染徵狀,血液裡的T細胞也很少
P2 新研究表示T會綁架人體的C細胞做感染途徑, 沒有這個方法, T其實感染不了人類
P3. 講述T的主要感染途徑跟宿主, 貓是T最唯一的繁衍宿主
-
P1
1. Context: parasite Toxoplasma – infects many people – without any noticeable symptoms
2. Elaborate: rapidly spreads – even penetrate the barrier that protects the brain
but few free-floating T cells in blood
3. Question: how T parasitize human without an immune response and without presence in bloodstream
P2
1. Answer(New research): T is quite common in D cells( in immune system )
2. Elaborate(T’s transport mechanism):
D cells encounter pathogens – inform other immune cells to take action
T can hijack dendritic cells -> reach the better-protected areas of the body
P3
1. T’s sources: through consumption of the undercooked meat – cat can become infected
2. Argument: Cats are a necessary component in the reproductive cycle of Toxoplasma – T eggs + cats’ intestines = cats' droppings (contaminate ground water and soil )
3. Supplement: T need to find a new host cat – waits for the host to be eaten by a cat – providing T the chance to reproduce
|
|