Results 81 to 90 of about 79,418 (282)

Analysis of the Movement of Chlamydomonas Flagella: The Function of the Radial-spoke System Is Revealed by Comparison of Wild-type and Mutant Flagella [PDF]

open access: yes, 1982
The mutation uni-1 gives rise to uniflagellate Chlamydomonas cells which rotate around a fixed point in the microscope field, so that the flagellar bending pattern can be photographed easily .
Brokaw, C. J., Huang, B., Luck, D. J. L
core  

TULP2 deletion mice exhibit abnormal outer dense fiber structure and male infertility

open access: yesReproductive Medicine and Biology, 2022
Purpose Tulp2 (tubby‐like protein 2) is a member of the tubby protein family and expressed predominantly in mouse testis. Recently, it was reported that Tulp2 knockout (KO) mice exhibited disrupted sperm tail morphology; however, it remains to be ...
Yuki Oyama   +5 more
doaj   +1 more source

Modelling Motility: The Mathematics of Spermatozoa

open access: yesFrontiers in Cell and Developmental Biology, 2021
In one of the first examples of how mechanics can inform axonemal mechanism, Machin's study in the 1950s highlighted that observations of sperm motility cannot be explained by molecular motors in the cell membrane, but would instead require motors ...
Eamonn A. Gaffney   +2 more
doaj   +1 more source

Flagellum couples cell shape to motility in Trypanosoma brucei

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance Trypanosoma brucei is a highly invasive pathogen capable of penetrating deeply into host tissues. To understand how flagellar motility facilitates cell penetration, we used cryo-electron tomography (cryo-ET) to visualize two genetically ...
Stella Y. Sun   +10 more
semanticscholar   +1 more source

Vibration of the Flagellum of the Ant Antennæ [PDF]

open access: yesNature, 1949
IN May 1949, a series of photographs of ants of the species Formica rufa, Latr., were taken by Raymond Kleboe of Picture Post, in collaboration with me, and in many of these worker ants were shown. The ants were usually in a posture of defence ; but whether they were defending the nest, attacking prey, or merely hurrying over the surface of the nest or
openaire   +3 more sources

Scanning Electron Microscopy of the Rainbow Trout (Salmo gairdneri Richardson) Spermatozoon [PDF]

open access: yes, 1976
The scanning electron microscope was used to determine the morphology of the rainbow trout (Salmo gairdneri Richardson) spermatozoon. The spermatozoon is approximately 32 μm long and consists of a head, mitochondrial collar, and flagellum.
Fribourgh, James H., Soloff, Bernard L.
core   +2 more sources

Sperm competition and sperm midpiece size: no consistent pattern in passerine birds [PDF]

open access: yes, 2007
Sperm competition is thought to be a major force driving the evolution of sperm shape and function. However, previous studies investigating the relationship between the risk of sperm competition and sperm morphometry revealed inconclusive results and ...
Birkhead T.R   +3 more
core   +2 more sources

Difference in the chemotaxis between monotrichous and peritrichous bacteria clarified by a numerical simulation and observation

open access: yesJournal of Biomechanical Science and Engineering, 2022
We investigate difference in the chemotactic behavior between peritrichous bacteria (Salmonella typhimurium SJW1103) and monotrichous bacteria (Vibrio alginolyticus YM4).
Tonau NAKAI   +2 more
doaj   +1 more source

The Vibrio H-Ring Facilitates the Outer Membrane Penetration of the Polar Sheathed Flagellum

open access: yesbioRxiv, 2018
Flagellum is the major organelle for motility in many bacterial species. While most bacteria possess external flagella, such as the multiple peritrichous flagella found in Escherichia coli and Salmonella enterica or the single polar sheathed flagellum in
Shiwei Zhu   +4 more
semanticscholar   +1 more source

Saccopharynx flagellum Mitchill.

open access: yes, 1883
44. Saccopharynx flagellum, Mitchill. Saccopharynx flagellum, Mitchill, Ann. Lye. New York, I., 1824, p. 82. A single badly mutilated example was secured.
Goode, G. B., Bean, T. H.
openaire   +2 more sources

Home - About - Disclaimer - Privacy