asurvey of progress and problems in comparative molecular embryology

نویسنده

  • Klaus Sander
چکیده

This report surveys data and interpretations presented by speakers in the Arthropod Session of the 1994 BSDB Spring Symposium. After a short review of phylogenetical aspects in premolecular insect embryology, the following topics are discussed: the ancestral germ type of pterygote insects, correlations between oogenesis and embryonic pattern formation, the universality or otherwise of bicoid as the anterior morphogen, novel functions in the insect Hox complex, the formal asymmetry between evolution and decay of complex gene networks, novel regulatory interac187

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Asurvey on the incidence of chronic suppurative otitis media(C.S.O.M) in Kermanian school children aged 12 to 15 years

chronic suppurative otitis media(C.S.O.M) in a chronic infective and chronic inflammatory process of middle ear and mastoid that may be with or without cholesteatoma.Due to its significant problems and complications such as hearing loss,labyrinthitis,facial nerve paralysis,meningitis,brain abscess,extra and subdural  BSCESS AND LATERAL SINUS THROMBOSIS IS A FATAL AND IMPORTANT DISEASE.IN THIS S...

متن کامل

Nicotine-induced damages in testicular tissue of rats; evidences for bcl-2, p53 and caspase-3 expression

Objective(s): Present study was performed in order to uncover new aspects for nicotine-induced damages on spermatogenesis cell lineage. Materials and Methods: For this purpose, 36 mature male Wistar rats were divided into three groups as; control-sham (0.2 ml, saline normal, IP), low dose (0.2 mg/kg BW-1, IP) nicotine-received and high dose (0.4 mg/kg BW-1, IP) nicotine-received groups. Followi...

متن کامل

P-2: Protective Effects of Ethyl Pyruvate on Serum Antioxidant Capacity and Testis Germinalepithelium Morphometryin Cyclophosphamide Treated Mice

Background Cyclophosphamide (CP) is a chemotherapeuticdrug which causes deleterious effects on tissue of testicle and increases free radicals in the body. The aim of this study is to investigate protective effects of ethyl pyruvate (EP) on improvement of testicle inCP treated animals. MaterialsAndMethods In this study, 15 male mice(6-8 weeks) were divided into 3 groups. Control group receivedno...

متن کامل

The effect of vitamin C on mice hemolytic anemia induced by phenylhydrazine: an animal model study using histological changes in testis, pre-implantation embryo development and biochemical changes

Objective(s): The aim of the present study was to assess the effects of vitamin C (Vit C) on hemolytic anemia induced by phenylhydrazine (PHZ). Materials and Methods: Twenty-four healthy male mice were divided into four groups, randomly: Control group (0.1 ml/day, normal slaine, IP), PHZ group that received only PHZ 8 mg/100 g/48 hr, IP, PHZ+Vit C group that received PHZ 8 mg/100 g/48 hr, IP an...

متن کامل

Small group discussion for medical students to learning embryology

Background: One of the most important issues is the best method to teach embryology course to medical students. Small group discussion (SGD) were used to working together, integral to learningdeveloping intellectual skills and interactive learning experience. Methods: The 72 medical students were equally randomizedto the SGD (group I) and usual lecture based teaching (LBT), (group II) in genera...

متن کامل

ذخیره 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 نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010