Engagement of the periesophageal ring during Holothuria polii response to erythrocyte injection.
نویسندگان
چکیده
In Holothuria polii, the periesophageal ring is an important organ supplying spherule cells after stimulation with foreign material. In animals injected with formalinized sheep erythrocytes, in fact, a depletion of spherule cells is observed in the periesophageal ring, whereas in the connective tissue, in the external epithelium and around the antigen-injected site, small, transparent cells can be visualized. It is supposed that the latter are stem cells of spherule cells.
منابع مشابه
Identification and some biological characteristics of commercial sea cucumber in the Turkey coast waters
In this study, commercial sea cucumber identification and some biological characteristics were investigated between Ayvalık and Çeşme. Ayvalık, Aliağa, Foça, Şakran and İzmir were selected as main stations. In the investigation where 70 stations were studied between 0 and 50 m depth 6 sea cucumber species were found. These were Holothuria tubulosa, Holothuria polii, Holothuria mammata, Holothur...
متن کاملThe Transient Behavior of LC and Ring Oscillators under External Frequency Injection
In this work, time domain analysis is used to solve Adler’s equation in order to obtain the required time, for an oscillator under external injection, reaching the steady-state condition. Mathematical approach has been applied to fully describe the transient of frequency acquisition in injection-locked LC and Ring oscillators considering their time-varying nature. Then, the analysis is verifie...
متن کاملAttenuation of vasoconstrictor response of knee joint blood vessels to (αl- adrenoceptor activation during chronic monoarthritis in rat: The role of nitric oxide
The effect of chronic inflammation induced by complete Freund's adjuvant (CFA) on anterior blood vessels of knee joint and its diameter was studied. Blood flow changes in response to phenylephrine (αl-adrenoceptor agonist) in CFA-treated and contralateral knee joints were observed over a 40-day period, using laser Doppler flowmetery (LDF) technique. Unilateral injection of CFA (0.2 ml) increase...
متن کاملThe Why, Who, What, How, and When of Patient Engagement in Healthcare Organizations: A Response to Recent Commentaries
متن کامل
Stress responses of the sea cucumber Holothuria forskali during aquaculture handling and transportation
Animal welfare during handling and transportation to aquaculture facilities or public aquaria is commonly estimated by addressing injury andmortality levels. Although these procedures have been optimized for different species, data on individual species’ cellular capabilities to tolerate stress are still scarce. In the present study, several biomarkers related with oxidative stress and energy m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- European journal of histochemistry : EJH
دوره 46 2 شماره
صفحات -
تاریخ انتشار 2002