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Full-Text Articles in Life Sciences
The Effect Of Shifts In Medium Types On The Growth And Morphology Of Spirulina Platensis (Arthrospira Platensis), Yean-Chang Chen
The Effect Of Shifts In Medium Types On The Growth And Morphology Of Spirulina Platensis (Arthrospira Platensis), Yean-Chang Chen
Journal of Marine Science and Technology
In order to reduce the cultural cost and increase the biomass of Spirulina platensis cultures, two basic culture media were used in the present study, the Zarrouk (Z9) and Provasoli's enriched seawater (PES) media. They were re-modified into five media by adding varied concentrations of NaCl, NaHCO3 and seawater (salinity). S. platensis could grow well in all of these media. The Z9 medium provided the best growth rate at the end of culture and the PES medium provided the best initial growth curve slope. After the media were shifted from PES to Z9, the long algal filaments fragmented to form …
Morphological And Ultrastructural Changes In Tissues Of Intermediate And Definitive Hosts Infected By Protostrongylidae, Abdurakhim Ergashevich Kuchboev, Eric P. Hoberg
Morphological And Ultrastructural Changes In Tissues Of Intermediate And Definitive Hosts Infected By Protostrongylidae, Abdurakhim Ergashevich Kuchboev, Eric P. Hoberg
Turkish Journal of Zoology
Cellular and subcellular mechanisms involved in tissue responses to larval and adult lungworms (Protostrongylidae) were respectively explored through experimental and natural infections in molluscan intermediate (Xeropicta candacharica) and ruminant definitive hosts (Ovis aries). Reaction to developing larval stages in the gastropod is manifested as cellular infiltration involving lymphocytes and macrophages into the infected tissue, which restricts damage and may result in destruction and elimination of parasites from the intermediate host. Variations in the patterns of localization for infective third-stage larvae in the foot tissue of the intermediate host are described. In the definitive host, evaluation of lung tissue by histology …
The Effects Of Uv Radiation On Some Structural And Ultrastructural Parameters In Pepper (Capsicum Longum A.Dc.), Siavash Hosseini Sarghein, Jirair Carapetian, Jalil Khara
The Effects Of Uv Radiation On Some Structural And Ultrastructural Parameters In Pepper (Capsicum Longum A.Dc.), Siavash Hosseini Sarghein, Jirair Carapetian, Jalil Khara
Turkish Journal of Biology
The objective of this study was to evaluate the effects on the structure and ultrastructure of pepper plants (Capsicum longum A.DC.) exposed to UV radiation under greenhouse conditions. The plants were grown in a growth chamber under uniform environmental conditions and after 35 days were exposed to UV-A and UV-C radiation for 15 and 8 days, respectively. Changes in root growth were not significant, but shoot growth decreased in UV-R-exposed plants and decreased significantly in UV-C-exposed plants. Leaf area also decreased in UV-R-exposed plants and decreased significantly in UV-C-exposed plants. Root thickness was not affected by UV treatment, but stem …
Descriptive Characteristics Of Haemopoietic Cell Lineages In A Facultative Air Breathing Fish Clarias Batrachus (L.), Krishna Gangopadhyay, Sumit Homechaudhuri
Descriptive Characteristics Of Haemopoietic Cell Lineages In A Facultative Air Breathing Fish Clarias Batrachus (L.), Krishna Gangopadhyay, Sumit Homechaudhuri
Turkish Journal of Zoology
Haemopoietic tissues of the head kidney of Clarias batrachus were studied for morphometric analysis and ultrastructural descriptions of the erythropoietic and leucopoietic cell populations. Eight successive steps of developing erythrocytes from small lymphoid haemoblasts (SLHs) to mature erythrocytes (MEs) were distinguished. Progressive loss of RNA and synthesis of haemoglobin during haemopoiesis were coupled with denser nucleus and changes in cellular shapes. Transmission electron microscopy aided in clear distinction between cell lineages in the development of erythrocytes, granulocytes, and lymphocytes. Ultrastructural analysis of the pronephric stromal cells forming adherent multilayer of haemopoietic microenvironment was explicit in describing their ability to promote …