SUBSTRUCTURE OF THE CORTICAL SINGLET MICROTUBULES IN SPERMATOZOA OFMACROSTOMUM(PLATYHELMINTHES, TURBELLARIA) AS REVEALED BY NEGATIVE STAINING
نویسندگان
چکیده
منابع مشابه
Substructure of Microtubules in Brain Nerve Cells as Revealed by Ruthenium Red
INTRODUCTION out according to the method of Luft (9) . The fixative available in the present study was 1 .25% glutaraldeThe presence of neurotubules with a diameter of hyde containing 5% sucrose and 500 ppm ruthenium about 200-250 A was first described in nervous red, and buffered with 0 .1 M cacodylate at pH 7.4 . tissue by Palay (11) . Similar components, the All specimens, after fixation in ...
متن کاملstudy of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
Structure of Isolated Plant Golgi Apparatus Revealed by Negative Staining
Sucrose-gradient-purified dictyosomes of plant Golgi apparatus appear, after glutaraldehyde stabilization, as stacks of highly fenestrate and tubate cisternae when negatively stained with phosphotungstic acid, shadowed with heavy metal, or OsO(4)-stained in thin section. The tubular proliferations (diameter 200 to 400 A) extend for several microns from the central region and are united at inter...
متن کاملStructure of a marine bacteriophage as revealed by the negative-staining technique.
Valentine, Artrice F. (Georgetown University, Washington, D.C.), Peter K. Chen, Rita R. Colwell, and George B. Chapman. Structure of a marine bacteriophage as revealed by the negative-staining technique. J. Bacteriol. 91:819-822. 1966.-The morphology of a marine bacteriophage has been determined by negative-staining techniques and electron microscopy. The virus possesses a head, 600 A in diamet...
متن کاملInternal Structure of Apoferritin as Revealed by the "Negative Staining Technique."
I t has been surmised that the apoferritin molecule has a hollow center which communicates with the outer surface through some sort of channels or slots (1-2). This inference is based upon the following findings: 1. As determined by means of electron microscopy, the ferric hydroxide (FeOOH) micelles of ferritin molecules are located within spheroids of apoferritin (1) ; 2. In reducing media, su...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1971
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1540271