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7 results for “testicular follicles”
Рис. 8. СреЗы череЗ гонады моллюска: А – поперечный среЗ череЗ гонаду самки, Б–Д – фолликулы в гонадах самок (Б, В – Зрелые ооциты круглой формы, готовые к вымету; Г – ооциты в период активного гаметогенеЗа на стадии раннего трофоплаЗматического роста, Д – ооциты каплевидной формы в период преднерестовой стадии при ЗаверШении трофоплаЗматического роста), Е, Ж – поперечные среЗы череЗ гонаду самца, З, И – ацинусы в гонадах самцов (З – преднерестоваЯ стадиЯ, просветы в ацинусах практически отсутствуют, стенки ацинусов не раЗличимы, И – нерестоваЯ стадиЯ, имеютсЯ просветы в ацинусах). МасШтабные линейки 300 мкм (А), 200 мкм (Е), 100 мкм (Ж), 50 мкм (Б–Д, З, И). вя – вакуолиЗированное Ядро, сф – стенка фолликула, вм – вителлиноваЯ мембрана, РО – раЗвиваюЩиесЯ иЗ пелликулы ооциты, пг – ресничный проток гонады, с – сперматоциты, па – просветы в ацинусах. Fig. 8. Sections through the gonads of the mollusk: А – transverse section through the female gonad, Б–Д – ovarian acini, follicles (Б, В – mature round-shaped oocytes ready to be swept out; Г – oocytes in the period of active gametogenesis at the stage of early trophoplasmatic growth, Д – tear-shaped oocytes during the pre-spawning stage at the end of trophoplasmatic growth), Е, Ж – transverse sections through the male gonads, З, И – testicular acini (З – pre-spawning stage, with practically absent gaps in the acini and invisible the acini walls, И – spawning stage, with gaps in the acini). Scale bars 300 µm (A), 200 µm (E), 100 µm (Ж), 50 µm (Б–Д, З, И). вя – vacuolated nucleus, сф – follicle wall, вм – vitelline membrane, РО – developing oocytes arising from a pellicle, пг – ciliated gonadal duct, с – spermatocytes, па – gaps in acini. in Nodularia vladivostokensis (Bivalvia: Unionidae) from Razdolnaya River (Primorye, Russia)
Рис. 8. СреЗы череЗ гонады моллюска: А – поперечный среЗ череЗ гонаду самки, Б–Д – фолликулы в гонадах самок (Б, В – Зрелые ооциты круглой формы, готовые к вымету; Г – ооциты в период активного гаметогенеЗа на стадии раннего трофоплаЗматического роста, Д – ооциты каплевидной формы в период преднерестовой стадии при ЗаверШении трофоплаЗматического роста), Е, Ж – поперечные среЗы череЗ гонаду самца, З, И – ацинусы в гонадах самцов (З – преднерестоваЯ стадиЯ, просветы в ацинусах практически отсутствуют, стенки ацинусов не раЗличимы, И – нерестоваЯ стадиЯ, имеютсЯ просветы в ацинусах). МасШтабные линейки 300 мкм (А), 200 мкм (Е), 100 мкм (Ж), 50 мкм (Б–Д, З, И). вя – вакуолиЗированное Ядро, сф – стенка фолликула, вм – вителлиноваЯ мембрана, РО – раЗвиваюЩиесЯ иЗ пелликулы ооциты, пг – ресничный проток гонады, с – сперматоциты, па – просветы в ацинусах. Fig. 8. Sections through the gonads of the mollusk: А – transverse section through the female gonad, Б–Д – ovarian acini, follicles (Б, В – mature round-shaped oocytes ready to be swept out; Г – oocytes in the period of active gametogenesis at the stage of early trophoplasmatic growth, Д – tear-shaped oocytes during the pre-spawning stage at the end of trophoplasmatic growth), Е, Ж – transverse sections through the male gonads, З, И – testicular acini (З – pre-spawning stage, with practically absent gaps in the acini and invisible the acini walls, И – spawning stage, with gaps in the acini). Scale bars 300 µm (A), 200 µm (E), 100 µm (Ж), 50 µm (Б–Д, З, И). вя – vacuolated nucleus, сф – follicle wall, вм – vitelline membrane, РО – developing oocytes arising from a pellicle, пг – ciliated gonadal duct, с – spermatocytes, па – gaps in acini.
Follicle Stimulating Hormone (FSH) to Improve Testicular Development in Men With Hypogonadism
ClinicalTrials.gov study NCT00064987. IPD Sharing: Not stated. Countries: 1. Publications: 5.
Figure 1 from: Kuznetsova VG, Maryańska-Nadachowska A, Khabiev GN, Karagyan G, Krivokhatsky VAK (2019) Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia). ZooKeys 894: 33-51. https://doi.org/10.3897/zookeys.894.47040
Figure 1 The proposed ancestral numbers of follicles per testis (white circles) and ovarioles per ovary (black circles) and limits of their variation across the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Myrmeleontiformia)
Fig. 3 in Stereological analysis of the sperm number in the testicular follicles of the Australian field cricket (Insecta: Orthoptera)
Fig. 3: Stereological quantification of spermatozoa by using a combination of the Cavalieri principle and disector method. The reference frame (20 x 20 µm) plays an important role insofar as cells touching the fully drawn line are included in the counting procedure, whereas cells touching the dashed line are excluded.
Fig. 2 in Stereological analysis of the sperm number in the testicular follicles of the Australian field cricket (Insecta: Orthoptera)
Fig. 2: Detailed light-microscopic photograph of a testicular follicle with its different zones of sperm development (right margin). For sperm counting only the basal part of the transformation zone was used. Abbreviations: FO - follicle, SPC - spermatocytes, SPG - spermatogonia, SPT - spermatids, SPZ - spermatozoa.
Fig. 1 in Stereological analysis of the sperm number in the testicular follicles of the Australian field cricket (Insecta: Orthoptera)
Fig. 1: (a) Stereo-microscopic image of a median section through the male abdomen of the Australian field cricket with its main organic structures; (b) Light-microscopic image of the testicle with follicles representing the places of spermatogenesis. Abbreviations: AG - accessory glands, DP - dorsal pouch, FO - follicle, FT - fatty tissue, GIT - gastrointestinal tract, M - mould, ML - median lobe, MP - median pouch, MV - Malpighi vessels, R - rectum, TE - testicle, TR - trachea, TRL - tracheole, IXS - 9th segment.
Supplementary material 1 from: Grozeva S, Stoianova D, Konstantinov F, Simov N, Kuznetsova VG (2022) A synopsis of the numbers of testicular follicles and ovarioles in true bugs (Heteroptera, Hemiptera) – sixty-five years of progress after J. Pendergrast's review. ZooKeys 1136: 71-123. https://doi.org/10.3897/zookeys.1136.96431
An updated list of testicular follicles' and ovarioles' numbers in Heteroptera
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