Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Feedback Loops

Feedback Loops

In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

Feedback Inhibition

Feedback Inhibition

Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!

Review and Preview

Review and Preview

Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...

Review and Preview

Review and Preview

In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...

Allergic Reactions

Allergic Reactions

Reaction Rate

Reaction Rate

The rate of reaction is the change in the amount of a reactant or product per unit time. Reaction rates are therefore determined by measuring the time dependence of some property that can be related to reactant or product amounts. Rates of reactions that consume or produce gaseous substances, for example, are conveniently determined by measuring changes in volume or pressure.
The mathematical representation of the change in the concentration of reactants and products, over time, is the rate...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Prevalence and Burden of Nausea and Vomiting in Pregnant Women: Final Analysis of the PURITY Survey.

Journal of clinical medicine·2026

Same author

Hypertensive retinopathy in pre-eclampsia and its association with disease severity and neonatal outcomes: A retrospective cohort study.

International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics·2026

Same author

Progestogen supplementation to prevent miscarriage: Evidence and controversies.

International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics·2026

Same author

Cervical Stiffness Index as predictor of preterm birth in women with threatened preterm labor.

European journal of obstetrics, gynecology, and reproductive biology·2025

Same author

Exercise in Pregnancy and Risk of Postpartum Depression: A Randomised Controlled Trial.

BJOG : an international journal of obstetrics and gynaecology·2025

Same author

Effect of Listening Music on Nulliparous Singleton Pregnancies Who Underwent Induction of Labor: A Randomized Clinical Trial.

American journal of perinatology·2024

Same journal

First Trimester Screening for Preterm Preeclampsia in the United Kingdom: A Cost-Effectiveness Analysis.

BJOG : an international journal of obstetrics and gynaecology·2026

Same journal

Correction to "The Management of Nausea and Vomiting in Pregnancy and Hyperemesis Gravidarum (Green-Top Guideline No. 69)".

BJOG : an international journal of obstetrics and gynaecology·2026

Same journal

Large Language Models on European Guidelines for Cervical Cancer: Implications of Design and Clinical Applicability.

BJOG : an international journal of obstetrics and gynaecology·2026

Same journal

Internal Consistency of the Hadlock Estimated Fetal Weight Reference: Methodological Analysis.

BJOG : an international journal of obstetrics and gynaecology·2026

Same journal

Placenta Praevia and Placenta Accreta Spectrum: Diagnosis and Management: Green-Top Guideline No. 27a.

BJOG : an international journal of obstetrics and gynaecology·2026

Same journal

Correction to "Identification and Management of Maternal Sepsis During and Following Pregnancy Green-top Guideline No. 64".

BJOG : an international journal of obstetrics and gynaecology·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Feb 26, 2026

Author Spotlight: Exploring Light-Driven Chemical Reactions and Energy-Harnessing Devices in Photochemical Research

Author Spotlight: Exploring Light-Driven Chemical Reactions and Energy-Harnessing Devices in Photochemical Research

Published on: February 16, 2024

Author Reply

Gabriele Saccone¹, Mariavittoria Locci¹

¹Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, Naples, Italy.

BJOG : an International Journal of Obstetrics and Gynaecology

|February 24, 2026

Summary

No abstract available in PubMed .

More Related Videos

Layers of Symbiosis - Visualizing the Termite Hindgut Microbial Community

Layers of Symbiosis - Visualizing the Termite Hindgut Microbial Community

Published on: May 28, 2007

Author Spotlight: A Novel Setup to Conduct Naturalistic Laboratory Experiments with Real Human Actors in Scenarios

Author Spotlight: A Novel Setup to Conduct Naturalistic Laboratory Experiments with Real Human Actors in Scenarios

Published on: August 4, 2023

Related Experiment Videos

Last Updated: Feb 26, 2026

Author Spotlight: Exploring Light-Driven Chemical Reactions and Energy-Harnessing Devices in Photochemical Research

Author Spotlight: Exploring Light-Driven Chemical Reactions and Energy-Harnessing Devices in Photochemical Research

Published on: February 16, 2024

Layers of Symbiosis - Visualizing the Termite Hindgut Microbial Community

Layers of Symbiosis - Visualizing the Termite Hindgut Microbial Community

Published on: May 28, 2007

Author Spotlight: A Novel Setup to Conduct Naturalistic Laboratory Experiments with Real Human Actors in Scenarios

Author Spotlight: A Novel Setup to Conduct Naturalistic Laboratory Experiments with Real Human Actors in Scenarios

Published on: August 4, 2023