98%
921
2 minutes
20
Planarians are flatworms with almost unlimited regenerative abilities, which make them an excellent model for stem cell-based regeneration. To study the process of regeneration at the cellular level, immunohistochemical staining methods are an important tool, and the availability of such protocols is one of the prerequisites for mechanistic experiments in any animal model. Here, we detail protocols for paraffin embedding and immunostaining of paraffin sections of the model species Schmidtea mediterranea. This protocol yields robust results with a variety of commercially available antibodies. Further, the procedures provide a useful starting point for customizing staining procedures for new antibodies and/or different planarian species.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/978-1-4939-7802-1_11 | DOI Listing |
Injections have been linked to feline sarcomas (feline injection-site sarcoma; FISS) and cutaneous lymphomas (cutaneous lymphoma at injection site; CLIS). Both tumors often exhibit lymphoplasmacytic inflammation ascribed to injected immunogenic material. CLIS is hypothesized to emerge from transformation and clonal expansion of lymphoid cells following persistent immune stimulation with feline leukemia virus (FeLV) reactivation and transformation.
View Article and Find Full Text PDFAnal Chim Acta
October 2025
Center of Laboratory Medicine, Beijing, Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases & Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 1000
Background: The treatment and prognosis of cardiac amyloidosis (CA) depend heavily on the accurate identification of amyloid protein types. Histopathological methods are the most commonly used approach, but often produce inconclusive results. The application of mass spectrometry with laser microdissection mass spectrometry based on non-targeted proteomics in CA diagnosis is gradually being recognized, but it is expensive, time-consuming, and still in the early stages of scientific research applications.
View Article and Find Full Text PDFCancer Sci
September 2025
Division of Thoracic Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
Ectopic germinal centers (GCs) are often formed in the thymus of patients with anti-acetylcholine receptor antibody (anti-AChR Ab)-positive thymic epithelial tumors (TETs) and are considered sites where B cells undergo affinity maturation to produce high-affinity anti-AChR Abs, contributing to the development of myasthenia gravis. To evaluate the clinical relevance of these ectopic GCs, we analyzed their distribution and associations with thymic involution and anti-AChR Ab titers using paraffin-embedded surgical specimens from 79 TET patients. Thymic involution was scored, and immunohistochemistry was performed to identify cells involved in GC formation.
View Article and Find Full Text PDFBr J Oral Maxillofac Surg
August 2025
Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077 Tamil Nadu, India. Electronic address:
Oral submucous fibrosis (OSMF) is a potentially malignant disorder with a risk of progressing to oral squamous cell carcinoma. A key indicator of malignant transformation is increased and uncontrolled cell proliferation, which can be evaluated using markers such as Ki67. This study aimed to assess Ki67 expression in OSMF, compare its levels across different associated habits, and correlate expression with clinical and histological grading.
View Article and Find Full Text PDFVirchows Arch
August 2025
Department of Pathology, Graduate School of Medicine, the University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, 113-0033, Tokyo, Japan.
Gastric cancer with peritoneal dissemination (PD) confers poor prognosis and limited treatment options. FGFR2b-targeted therapy has emerged as a potential approach for FGFR2b-positive tumors. However, the expression and amplification status of FGFR2b in PD remains poorly characterized.
View Article and Find Full Text PDF