Protective Cone Attachment
Protective Cone Attachment - Related Videos
01:20
Attachment
0 Views •
2025
Attachment is vital for infant development, as warm social interactions support growth and well-being. In a classic 1958 study by Harry Harlow, the significance of warmth and comfort in forming attachments was examined. Harlow separated newborn monkeys from their mothers and provided two artificial "mothers": one made of cold wire and the other covered in soft cloth. Despite the wire mother offering food, the infant monkeys preferred the comfort of the cloth mother, demonstrating that physical...
02:14
Microscopy-Based Evaluation of Bacterial Attachment to Plant Root Surfaces
0 Views •
2026
Source: Matthysse, A. G. Adherence of Bacteria to Plant Surfaces Measured in the Laboratory. J. Vis. Exp. (2018).This video demonstrates the evaluation of bacterial attachment to plant roots using phase-contrast microscopy. Root samples from seedlings incubated with bacteria are first mounted to check for free bacteria. The samples are then washed to remove loosely attached bacteria and remounted using a suitable coverslip to prevent damage. Finally, the number of bacteria attached to the root...
01:25
Transmission-based Precautions II: Airborne and Protective Environment
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2023
Transmission-based precautions are for patients infected or suspected to be infected (or colonized) with organisms posing a significant risk to others. The transmission precautions include airborne and protective environment precautions. Airborne precautions: Use airborne precautions when treating patients known or suspected to have diseases that spread through the air—for example, tuberculosis or measles. These organisms are present in smaller droplets expelled by an infected person and...
06:44
Hydrolysis of a Ni-Schiff-Base Complex Using Conditions Suitable for Retention of Acid-labile Protecting Groups
0 Views •
2017
Here, we present an efficient hydrolysis and subsequent Fmoc protection of an amino acid isolated from a Ni-Schiff-base complex. Hydrolysis conditions presented here are suitable for use when retention of acid-labile side-chain protecting groups is required. This technique may be adaptable to a variety of unnatural amino acid substrates.
16:29
Neuronal Cell Cultures from Aplysia for High-Resolution Imaging of Growth Cones
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Cited by 18 •
2008
Aplysia californica neurons develop large growth cones in culture that are excellent for high-resolution imaging of growth cone motility and guidance. Here, we present a protocol for dissection and plating of Aplysia bag cell neurons as well as for setting up a chamber for live cell imaging.
FAQs
A correctly attached cone establishes a consistent boundary around the target region, reducing opportunities for accidental contact, unwanted movement, contamination, or fluid displacement. Because the barrier remains localized while access is preserved, researchers can manipulate or observe delicate specimens, working areas, or instruments under more consistent physical conditions.
Position determines whether the cone protects the intended region without covering the area needed for manipulation or observation. Fixation maintains that position during the procedure. If either factor is inadequate, the cone may obstruct access, allow movement, disturb sample handling, or reduce the reliability of measurements obtained from the biological preparation.
Incorrect attachment can compromise both the procedure and the specimen. A poorly positioned cone may block the working area, while insufficient stability can permit movement or unwanted contact. These problems may affect delicate tissues, embryos, organisms, or instruments and can produce less reproducible handling conditions or measurements that do not accurately reflect the intended preparation.
Attachment requires the cone to remain securely positioned relative to the specimen, device, or working area throughout the procedure. Merely placing a cone nearby does not reliably establish a stable barrier or control access. The distinction matters because protection depends on maintaining the intended position while still allowing the target region to be reached.
First, position the cone around the intended specimen, device, or working area. Next, secure it so the barrier remains stable during manipulation, observation, or preparation. Finally, check that the target remains accessible and that the cone does not obstruct the procedure. This sequence helps preserve sample integrity and measurement quality.
The approach is useful when procedures involve delicate tissues, embryos, organisms, instruments, or defined working areas that require controlled handling. It can support manipulation, observation, and experimental preparation by limiting unwanted physical exposure while maintaining access. Its value is greatest when consistent positioning and protection are necessary for reproducible sample handling.