Results 31 to 40 of about 284 (114)

Astrocyte–Endotheliocyte Axis in the Regulation of the Blood–Brain Barrier [PDF]

open access: yes, 2021
The evolution of blood–brain barrier paralleled centralisation of the nervous system: emergence of neuronal masses required control over composition of the interstitial fluids.
Pivoriūnas, Augustas   +1 more
core   +1 more source

Редкие виды рыб бассейна Северского Донца Северо-восточной Украины [PDF]

open access: yes, 2008
В обзоре дана обобщающая фаунистическая сводка по видовому составу рыб Северо-восточной Украины в верхнем и начале среднего течения Северского Донца (главный приток Дона) в основном в границах Харьковской области.
Гончаров, Г.Л.   +1 more
core  

Functional assessment of morphological homoplasy in stem-gnathostomes [PDF]

open access: yes, 2021
Osteostraci and Galeaspida are stem-gnathostomes, occupying a key phylogenetic position for resolving the nature of the jawless ancestor from which jawed vertebrates evolved more than 400 million years ago.
Botella, Hector   +5 more
core   +3 more sources

Зоологія хордових [PDF]

open access: yes, 2017
Видання вміщує 1107 тестових завдань з різних розділів курсу «Зоологія хордових», передбачених навчальним планом підготовки бакалавра спеціальності 091 «Біологія» та список рекомендованої літератури.
Sukhomlin, Kateryna B.   +5 more
core  

Peixes de Costão Rochoso de Santa Catarina. I. Arvoredo [PDF]

open access: yes, 2013
Este livro representa um passo importante no sentido de ampliar o conhecimento acerca da ictiofauna marinha do sul do Brasil e de sensibilizar pesquisadores, tomadores de decisão e o público em geral com relação à importância da conservação da Reserva ...
Barreiros, João P.   +6 more
core  

New distribution data on spanish autochthonous species of freshwater fish [PDF]

open access: yes, 2011
Over the last two years (2008-2010) we performed a monitoring project to update the Spanish freshwater fish fauna. We have collected in 785 sampling localities homogeneously distributed throughout Spain each year.
Bogado   +13 more
core   +3 more sources

An Upper Silurian Vertebrate Horizon [PDF]

open access: yes, 1950
The earliest fossil fragments which have been positively identified as vertebrate come from the Upper Ordovician. They are fragments, the best known of which come from the Harding sandstone near Canon City, Colorado.
Robertson, George M.
core   +1 more source

INVENTASRISASI DIVERSITAS PISCES [PDF]

open access: yes, 2022
ABSTRAK INVENTARISASI DIVERSITAS PISCES Oleh : VENTI SURYANINGSIH Pendidikan merupakan suatu proses dalam rangka mempengaruhi peserta didik untuk membentuk sikap dan kepribadian serta mengembangkan potensi yang dimilikinya dengan tujuan untuk ...
VENTI, SURYANINGSIH
core  

A critical appraisal of appendage disparity and homology in fishes [PDF]

open access: yes, 2019
Fishes are both extremely diverse and morphologically disparate. Part of this disparity can be observed in the numerous possible fin configurations that may differ in terms of the number of fins as well as fin shapes, sizes and relative positions on the ...
Abel O.   +245 more
core   +1 more source

Some Attempts at Phylogeny of Early Vertebrates [PDF]

open access: yes, 1953
There is an often-quoted reply of a mountain-climber to the question of his motives in mountain climbing. Why do I want to climb that mountain? Because it is there.
Robertson, George M.
core   +1 more source

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