Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Diffusion01:12

Diffusion

219.5K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
219.5K
Diffusion01:21

Diffusion

6.4K
Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
6.4K
Primary Active Transport01:47

Primary Active Transport

199.2K
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction...
199.2K
Facilitated Diffusion01:16

Facilitated Diffusion

1.3K
The plasma membrane, a critical structure in cellular biology, houses an array of transporters, or carrier proteins, interspersed within its lipid bilayer. These proteins play a crucial role in solute transport through facilitated diffusion, a form of passive diffusion that uses transporters to move the molecules across the membrane.
In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
1.3K
Ovarian Cycle01:27

Ovarian Cycle

4.0K
The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
4.0K
Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion03:48

Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion

31.4K
Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
31.4K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Pericoronary Adipose Tissue as a Predictor of Diastolic Dysfunction: A New Paradigm in Coronary Artery Disease Assessment.

International journal of heart failure·2025
Same author

Locoregional and symptomatic response to neoadjuvant dual HER2 blockade with chemotherapy in HER2-positive breast cancer: a pilot study.

Anti-cancer drugs·2025
Same author

Romiplostim Reduces Platelet Transfusion Needs in Multiple Myeloma Patients Undergoing Autologous Stem Cell Transplantation.

Cureus·2025
Same author

Docetaxel-induced lung injury.

Medical journal, Armed Forces India·2024
Same author

The prevalence of Chlamydia trachomatis infection by Nucleic Acid Amplification test in women of reproductive age group under treatment for infertility.

Medical journal, Armed Forces India·2024
Same author

Carotid Artery Doppler: A Possible Non-invasive Diagnostic Approach to Assessing the Severity of Coronary Artery Disease.

Cureus·2024
Same journal

Upadacitinib salvage for refractory immune checkpoint inhibitor colitis complicated by cytomegalovirus infection.

BMJ case reports·2026
Same journal

<b>Severe hypokalaemia and secretory diarrhoea secondary to a vasoactive intestinal peptide-secreting tumour (VIPoma</b>).

BMJ case reports·2026
Same journal

Intraductal oncocytic papillary neoplasm of the pancreas.

BMJ case reports·2026
Same journal

Post-extubation pneumothorax following bougie-assisted endotracheal tube exchange.

BMJ case reports·2026
Same journal

Cardiac tamponade secondary to hypothyroidism.

BMJ case reports·2026
Same journal

Unmasking a rare contrast reaction: acute non-cardiogenic pulmonary oedema after iohexol injection.

BMJ case reports·2026
查看所有相关文章

相关实验视频

Updated: Feb 6, 2026

Method for Obtaining Primary Ovarian Cancer Cells From Solid Specimens
05:58

Method for Obtaining Primary Ovarian Cancer Cells From Solid Specimens

Published on: February 4, 2014

14.2K

主要卵巢扩散大B细胞淋巴瘤

Parvinder Singh1, V S Prakash2, Anvesh Rathore2

  • 1Department of Internal Medicine, Armed Forces Medical College, Pune, Maharashtra, India parvindersingh4674@gmail.com.

BMJ case reports
|February 4, 2026
PubMed
概括
此摘要是机器生成的。

主要卵巢淋巴瘤是一种罕见的癌症,经常被误诊. 这一案例突显了异常呈现的扩散性大B细胞淋巴瘤 (DLBCL),强调了对持续症状进行彻底调查的必要性.

关键词:
癌症 - - 见瘤学妇科癌症 妇科癌症恶性和良性血液学恶性疾病和免疫抑制产科,妇科和生育的生育能力.

更多相关视频

Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma
10:52

Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma

Published on: March 30, 2018

11.7K
Bioprinting of Hydrogel Tumor Slices as a 3D Model for Mantle Cell Lymphoma
08:31

Bioprinting of Hydrogel Tumor Slices as a 3D Model for Mantle Cell Lymphoma

Published on: September 12, 2025

836

相关实验视频

Last Updated: Feb 6, 2026

Method for Obtaining Primary Ovarian Cancer Cells From Solid Specimens
05:58

Method for Obtaining Primary Ovarian Cancer Cells From Solid Specimens

Published on: February 4, 2014

14.2K
Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma
10:52

Tumor Engraftment in a Xenograft Mouse Model of Human Mantle Cell Lymphoma

Published on: March 30, 2018

11.7K
Bioprinting of Hydrogel Tumor Slices as a 3D Model for Mantle Cell Lymphoma
08:31

Bioprinting of Hydrogel Tumor Slices as a 3D Model for Mantle Cell Lymphoma

Published on: September 12, 2025

836

科学领域:

  • 在瘤学瘤学.
  • 血液学 血液学 血液学
  • 病理学 病理学 病理学

背景情况:

  • 初级卵巢淋巴瘤是一种罕见的恶性瘤,占卵巢瘤的不到1%.
  • 扩散性大B细胞淋巴瘤 (DLBCL) 是主要卵巢淋巴瘤最常见的亚型.
  • 由于症状与妇科和传染病状况重叠,延迟诊断是常见的.

研究的目的:

  • 报告一种罕见的原发性卵巢扩散性大B细胞淋巴瘤 (DLBCL) 病例.
  • 突出诊断挑战和先进成像在识别罕见恶性瘤的实用性.
  • 强调在异常呈现的副质群体的差异诊断中考虑淋巴瘤的重要性.

主要方法:

  • 一个年轻女子患有持续的呼吸道和体内症状的病例报告.
  • 最初的调查包括成像 (中枢淋巴腺病变) 和活检 (死结粒状炎症).
  • 诊断工作进展到FDG PET-CT和MRI,随后进行腹腔镜活检以确定诊断.

主要成果:

  • 患者出现了声,呼吸不全和发烧,最初诊断错误.
  • FDG PET-CT揭示了一种高代谢的右侧附质,促使进一步调查.
  • 腹腔镜活检证实IV期,高等级DLBCL (生殖中心B细胞亚型) 具有高Ki-67指数.

结论:

  • 主要卵巢DLBCL可以呈现非特异性症状,模仿其他疾病.
  • 像PET-CT和MRI这样的先进成像对于检测高代谢质量和指导诊断至关重要.
  • 及时和准确的诊断对于有效管理这种罕见的卵巢恶性瘤至关重要.