Biological Sciences

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    Protocols in Current Issue
    Method for Rapid Enzymatic Cleaning for Reuse of Patch Clamp Pipettes: Increasing Throughput by Eliminating Manual Pipette Replacement between Patch Clamp Attempts
    [Abstract]

    The whole-cell patch-clamp method is a gold standard for single-cell analysis of electrical activity, cellular morphology, and gene expression. Prior to our discovery that patch-clamp pipettes could be cleaned and reused, experimental throughput and automation were limited by the need to replace pipettes manually after each experiment. This

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    Micrografting in Arabidopsis Using a Silicone Chip
    Authors:  Hiroki Tsutsui, Yaichi Kawakatsu and Michitaka Notaguchi, date: 06/20/2021, view: 1213, Q&A: 0
    [Abstract]

    The micrografting technique in the model plant Arabidopsis has been widely used in the field of plant science. Grafting experiments have demonstrated that signal transductions are systematically regulated in many plant characteristics, including defense mechanisms and responses to surrounding environments such as soil and light conditions.

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    Simplified Epigenome Profiling Using Antibody-tethered Tagmentation
    Authors:  Steven Henikoff, Jorja G. Henikoff and Kami Ahmad, date: 06/05/2021, view: 1219, Q&A: 0
    [Abstract]

    We previously introduced Cleavage Under Targets & Tagmentation (CUT&Tag), an epigenomic profiling method in which antibody tethering of the Tn5 transposase to a chromatin epitope of interest maps specific chromatin features in small samples and single cells. With CUT&Tag, intact cells or nuclei are permeabilized, followed by successive

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    Objective Quantitation of Focal Sweating Areas Using a Mouse Sweat-assay Model
    Authors:  Choongjin Ban and Dae-Hyuk Kwoen, date: 06/05/2021, view: 1005, Q&A: 0
    [Abstract]

    In vivo sweat quantitation assays are required for the development of drugs for the management of focal hyperhidrosis before clinical trials; however, in vivo assays, particularly mouse models, are rare. Even in sweat assays using mice, sweating is quantitated by manually counting the number of sweating spots, which can contribute to various

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    Parasitemia Evaluation in Mice Infected with Schistosoma mansoni
    Authors:  Naiara Clemente Tavares and Marina Moraes Mourão, date: 05/20/2021, view: 1944, Q&A: 0
    [Abstract]

    Schistosomiasis is a neglected tropical disease. Its treatment relies on the use of a single drug, praziquantel. Due to treatment limitations, an alternative for schistosomiasis chemotherapy is required; thus, a better understanding of parasite biology and host-parasite interactions is valuable to aid the identification of new anti-Schistosoma

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    Age, Wound Size and Position of Injury – Dependent Vascular Regeneration Assay in Growing Leaves
    [Abstract]

    Recurring damage to the aerial organs of plants necessitates their prompt repair, particularly their vasculature. While vascular regeneration assays for aerial plant parts such as the stem and inflorescence stalk are well established, those for leaf vasculature remain unexplored. Recently, we established a new vascular regeneration assay in

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    Single or Repeated Ablation of Mouse Olfactory Epithelium by Methimazole
    Authors:  Sofia Håglin, Staffan Bohm and Anna Berghard, date: 04/20/2021, view: 1845, Q&A: 0
    [Abstract]

    Odor-detecting olfactory sensory neurons residing in the nasal olfactory epithelium (OE) are the only neurons in direct contact with the external environment. As a result, these neurons are subjected to chemical, physical, and infectious insults, which may be the underlying reason why neurogenesis occurs in the OE of adult mammals. This feature

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    Development of a Chemical Reproductive Aging Model in Female Rats
    [Abstract]

    Women are born with an abundant but finite pool of ovarian follicles, which naturally and progressively decreased during their reproductive years until menstrual periods stop permanently (menopause). Perimenopause represents the transition from reproductive to non-reproductive life. It is usually characterized by neuroendocrine, metabolic and

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    Screening for Lysogen Activity in Therapeutically Relevant Bacteriophages
    Authors:  Fernando L. Gordillo Altamirano and Jeremy J. Barr, date: 04/20/2021, view: 2585, Q&A: 1
    [Abstract]

    Lysogenic phages can integrate into their bacterial host’s genome, potentially transferring any genetic information they possess including virulence or resistance genes, and are therefore routinely excluded from therapeutic applications. Lysogenic behavior is typically seen in phages that create turbid plaques or possess subpar bactericidal

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    Using the Cecal Ligation and Puncture Model of Sepsis to Induce Rats to Multiple Organ Dysfunction
    [Abstract]

    Sepsis is a dysregulated hyperinflammatory disease caused by infection. Sepsis leads to multiple organ dysfunction syndrome (MODS), which is associated with high rates of mortality. The cecal ligation and puncture (CLP) model has been widely used in animals and has become the gold-standard method of replicating features of sepsis in humans.

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