Results 211 to 220 of about 177,865 (310)

Sperm Head–Tail Coupling Apparatus Diversity and Common Themes Among Species

Andrology, EarlyView.
ABSTRACT Background A stable connection between the sperm head (containing the nucleus and acrosome) and tail (containing the axoneme, mitochondrial sheath, and periaxonemal structures) is critical for fertility. This connection is mediated by a series of nuclear, cytoplasmic, and centriole components that make up the head–tail coupling apparatus (HTCA)
Danielle B. Buglak, Brian J. Galletta, Nasser M. Rusan   +2 more
wiley   +1 more source

Haemanthidine-Containing Alkaloid Fraction from Crinum scabrum as a Natural Therapeutics for Chagas Disease

ACS Omega
Jennifer Blandón Pardo, Lorraine Martins Rocha Orlando, Leonardo da Silva Lara, Mirian Claudia de Souza Pereira, Natália Ferreira de Sousa, Luciana Scotti, Marcus Tullius Scotti, Warley de Souza Borges   +7 more
doaj   +1 more source

Clofazimine against cerebral toxoplasmosis in diabetic and dexamethasone-immunosuppressed mice: ultrastructural and semiquantitative transmission electron microscopic study. [PDF]

BMC Neurosci
Fahmy MA, Abdel-Aal AA, Hassan SI, Shalaby MA, Esmat M.   +4 more
europepmc   +1 more source

Diabetes‐Induced Testicular Injury: Potential Protective Roles of Curcumin, Garcinia kola, and Momordica charantia in Rats

Andrology, EarlyView.
ABSTRACT Background Diabetes mellitus (DM) induces multifaceted cellular and structural alterations in the male reproductive system, thereby predisposing to infertility. Objectives This study aimed to evaluate the morphological, stereological, biochemical, histopathological, and ultrastructural changes induced by DM in testicular tissue, and to ...
Ayşenur Kaya Mutlu, Süleyman Kaplan
wiley   +1 more source

First Insights on Photoreceptor Organ Ultrastructure in Marine Chaetonotida (Gastrotricha): Species of Xenotrichula and Draculiciteria (Xenotrichulidae)

Acta Zoologica, EarlyView.
ABSTRACT Marine gastrotrichs inhabit sediments with limited available light, yet evidence suggests that photoreceptor organs are present throughout the phylum Gastrotricha. Here, we confirm this proposition with ultrastructural descriptions of photoreceptive organs in two species of Xenotrichulidae (Order Chaetonotida) that lack pigmented ocelli ...
Thiago Quintão Araújo, Rick Hochberg
wiley   +1 more source

Microalgal Cell Wall Dynamics at Different Growth Stages Under Cold Stress Conditions: A Study of Ultrastructure and Chemical Composition. [PDF]

Physiol Plant
González-Hourcade M, Gentili FG, Fernando D.   +2 more
europepmc   +1 more source

Anatomy and Histology of the Midgut of Atopozelus opsimus (Heteroptera: Reduviidae)

Acta Zoologica, EarlyView.
ABSTRACT Atopozelus opsimus Elkins, 1954 (Heteroptera: Reduviidae) preys on forest and agricultural pests but also feeds on extrafloral nectar; however, its alimentary canal is poorly understood. The aim was to describe the anatomy and histology of the A. opsimus midgut. The alimentary canal of female and male A.
Bruna Silva Lisboa, José Eduardo Serrão, Jamile Fernanda Silva Cossolin, Germano Leão Demolin Leite, José Cola Zanuncio, Sebastião Lourenço de Assis Júnior, Pedro Guilherme Lemes   +6 more
wiley   +1 more source

Accomplishments of "Old-Fashioned" Electron Microscopy in the Period of Dominance of Immunofluorescent Methods. [PDF]

Int J Mol Sci
Morozov YM, Rakic P.
europepmc   +1 more source

Anatomical and Histological Descriptions of the Male Reproductive System of the Alfalfa Weevil of Hypera postica (Gyllenhal, 1813) (Coleoptera: Curculionidae) Using Light and Scanning Electron Microscopies

Acta Zoologica, EarlyView.
ABSTRACT Features of the reproductive organs, such as the number of testicular follicles, testis colour and the morphology of the glands, can be used as systematic characters. For this purpose, this paper was the first description of the male reproductive system anatomy and histology of Hypera postica (Gyllenhal, 1813) (Coleoptera: Curculionidae), a ...
Nurcan Özyurt Koçakoğlu, Selami Candan, Hicret Arslan, Mustafa Güllü   +3 more
wiley   +1 more source

Ultrastructural [PDF]

Modern Pathology, 2012
openaire   +1 more source