Rapid Cooling Protocol

A rapid cooling protocol is a controlled method for quickly reducing the temperature of biological samples, cells, tissues, or reagents to preserve their properties and limit unwanted changes. By transferring heat efficiently and maintaining defined temperature conditions, cooling slows metabolic reactions, enzymatic activity, and other temperature-dependent processes that can cause degradation or alter experimental results. In biology, rapid cooling supports sample handling, short-term preservation, cell and tissue processing, and preparation for downstream analyses. Standardized timing, cooling equipment, and temperature monitoring improve reproducibility, helping researchers maintain sample integrity while reducing variability between experiments.

Rapid Cooling Protocol - Related Videos

Research

JoVE Journal - Biology

Cryopreservation of Zebrafish Spermatogonia by Whole Testes Needle Immersed Ultra-Rapid Cooling

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Cited by 18 •

2018

The main purpose of this study was to adapt the needle immersed vitrification (NIV) procedure to cryopreserve whole zebrafish testes. Additionally, the repeatability of the method in five different zebrafish strains was tested.

Vitrification-based Cryopreservation: An Ultra-rapid Cooling Technique to Preserve Biological Specimens at Very Low Temperatures for Long-term Storage

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2023

In this video, we demonstrate an ultra-rapid cryo vitrification method for preserving biological samples. The method entails the use of a combination of cryoprotectants to protect the biological tissue from freezing damage by preventing intracellular ice crystal formation.

Education

JoVE Core - Chemistry

Heating and Cooling Curves

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2020

When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves. For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...

Rabbit Embryo Vitrification Using Cryogenic Straw: An Ultra-Rapid Cooling Technique to Preserve Rabbit Embryos for Long-term Storage

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2025

In this video, we describe the procedure for vitrification of harvested rabbit embryos at desired development stage using ethylene glycol and dimethyl sulfoxide as cryoprotectants and cryogenic straw as the carrier system. The vitrified embryos have high survival rate and can be stored for an extended period until use.

Research

JoVE Journal - Biology
Free Sample

Rapid Protocol for Preparation of Electrocompetent Escherichia coli and Vibrio cholerae

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Cited by 59 •

2013

Electroporation is a commonly employed method for introducing DNA into bacteria in a process known as transformation. Traditional protocols for the preparation of electrocompetent cells are time consuming and labor intensive. This article describes an alternate, rapid, and efficient method for the preparation of electrocompetent cells presently employed by some laboratories.

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