Sperm

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Electron micrograph of the round-headed human spermatozoa.

Submitted by:
Andrei Rybouchkin

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Native Assessment of Sperm Ultramorphology - the microscope system developed in Altravita IVF Clinic employed both Hoffman and Nomarski contrast techniques. Resolution increase was attained with

Submitted by:
Alexey

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The multinuclear cell is a result of incomplete spermatogenesis resulting in undivided spermatids as an abnormal round cell. Spermatids with cytoplasm are at the stage just before 

Submitted by:
Professor Philip J. Chan

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Can you tell which image shows polymorphonuclear leukocytes(PMN) and which image shows spermatids? Answer: The left column are PMN leukocytes or white blood cells (WBC). Diff-Quik stain of semen. Ma

Submitted by:
Professor Philip J. Chan

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Dual use of Diff-Quik (Hema 3) for both strict morphology and chromatin integrity (Hum Reprod. 2009;24:28) can be improved (J Reprod Med. 2015;60:6) by an immediate post-stain 1-minute soak-in-water s

Submitted by:
Professor Philip J. Chan

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Sperm DNA compressed into toroids are exposed by acidified Triton X-100 and DTT pre-treatment (Biomed Res Int. 2015;2015:780983). DNA damage (darker color) is revealed following simple staining (Diff-

Submitted by:
Professor Philip J. Chan

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Real-time modified alkaline SCGE assay showing fluorescent DNA unraveling from damaged sperm nucleus and forming comet tail. Am J Obstet Gynecol. 2001;184:1068.

Submitted by:
Prof. Philip J. Chan

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DNA damage (single and double strand breaks) in alkaline comet assay is revealed by streaking tail from a diminished sperm nucleus. Fertil Steril 75:1-4,2001

Submitted by:
Dr.Philip Chan

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Composite photos of in vitro sperm head decondensation. After sperm entry into the oocyte, the head enlarges (the acrosomal cap is sometimes visible), followed by formation of the pronucleus. Magnific

Submitted by:
Prof. Philip J. Chan

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The mature sperm cell has a negative "zeta" electropotential after acquiring epididymal proteins and sticks to the surface at the: (1) acrosome tip (2) postacrosome (3) midpiece (4) tailtip or (5) ent

Submitted by:
Professor Philip J. Chan