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相关概念视频

Kidney Structure01:45

Kidney Structure

74.7K
The kidneys are two large bean-shaped organs located in the upper abdomen. They filter the blood several times a day to remove toxins and rebalance water and electrolytes of the circulatory system via the renal veins. The kidneys receive blood directly from the heart via the renal arteries. These arteries enter the kidney at the hilum, the concave surface of the bean, where they branch and divide into smaller vessels and capillaries.
74.7K
Internal Anatomy of the Kidney01:12

Internal Anatomy of the Kidney

5.9K
The kidneys are essential organs in the human body, performing a myriad of tasks that maintain homeostasis and overall health.
Anatomical Position and Dimensions
The kidneys are retroperitoneal organs positioned against the posterior abdominal wall on either side of the spine, roughly between the twelfth thoracic and third lumbar vertebrae. Each kidney is typically 10-12 cm long, 5-6 cm wide, and 3-4 cm thick, weighing about 150 grams.
Renal Cortex
The outermost region of the kidney is the...
5.9K
Imaging Studies I: Kidney, Ureter, and Bladder Studies01:28

Imaging Studies I: Kidney, Ureter, and Bladder Studies

246
Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...
246
Renal Corpuscle01:20

Renal Corpuscle

6.9K
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
6.9K
External Anatomy of the Kidney01:21

External Anatomy of the Kidney

3.3K
The kidneys are a pair of bean-shaped organs in the human body that play a critical role in maintaining overall health. They filter out waste products from the blood, regulate blood pressure, maintain electrolyte balance, and stimulate the production of red blood cells.
The kidneys are located in the retroperitoneal space on either side of the vertebral column, protected posteriorly by the 11th and 12th ribs. The right kidney sits slightly lower than the left owing to the presence of the liver...
3.3K
Renal Tubule and Collecting Duct01:24

Renal Tubule and Collecting Duct

3.0K
The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
3.0K

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基细胞+:解码生物学的多模式单细胞基础模型.

Chenyu Li, Elias Ziyadeh, Yash Sharma

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    我们创建了Nephrobase Cell+,这是第一个脏特异性的基础模型,在单细胞脏分析中表现优于现有的方法. 这个模型为基因组学和疾病研究提供了强大的跨物种洞察力.

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    科学领域:

    • 基因组学就是基因组学.
    • 计算生物学 计算生物学
    • 生物信息学是一种生物信息学.

    背景情况:

    • 大型基础模型已经进行了先进的单细胞分析,但缺少脏特定模型.
    • 整合脏单细胞和空间奥米克数据是具有挑战性的,因为细胞复杂性和批量效应.
    • 现有的框架在脏数据中的跨模式变化和跨物种概括方面扎.

    研究的目的:

    • 开发第一个以脏为重点的大型基础模型.
    • 评估特定器官模型是否优于脏数据的通用模型.
    • 改进多式联通瘤数据的整合和分析.

    主要方法:

    • 开发了Nephrobase Cell+,一种使用基于变压器的编码器解码器架构的脏特定基础模型.
    • 在四种哺乳动物物种的3950万个单细胞和单核个人资料中预先训练了大约1000亿个令牌的模型.
    • 整合了基因标记交叉注意力和混合专家模块,用于可扩展的表示学习.

    主要成果:

    • 基细胞+建立了脏单细胞分析的新基准,产生了生物学上连贯的嵌入.
    • 实现了卓越的集群一致性和批量混合得分,有效地消除了批量效应,同时保留了细胞类型结构.
    • 证明了跨物种主要系的零射击注释准确度>90%,优于现有模型.

    结论:

    • 基细胞+提供了一个统一的,高准确度的生物学表现.
    • 该模型是强大的,跨物种可转移,并且与当前的单细胞基础模型无可比拟.
    • 为推进基因组学和疾病研究提供了强大的资源.