Results 41 to 50 of about 15,925,070 (360)

When Is an Alveolar Type 2 Cell an Alveolar Type 2 Cell? A Conundrum for Lung Stem Cell Biology and Regenerative Medicine.

open access: yesAmerican Journal of Respiratory Cell and Molecular Biology, 2017
Generating mature, differentiated, adult lung cells from pluripotent cells, such as induced pluripotent stem cells and embryonic stem cells, offers the hope of both generating disease-specific in vitro models and creating definitive and personalized ...
M. Beers, Y. Moodley
semanticscholar   +1 more source

Science Experience as correlate of student learning outcome

open access: yesInternational Journal of Theory and Application in Elementary and Secondary School Education (IJTAESE), 2021
Biology as the science of life is designed ultimately to educate individuals so that they can acquire knowledge about the basic essentials of living things and those of their community.
Oluwasina Bukola Timothy
doaj   +1 more source

The structural biology of type IV secretion systems [PDF]

open access: yesNature Reviews Microbiology, 2009
Type IV secretion systems (T4SSs) are versatile secretion systems that are found in both Gram-negative and Gram-positive bacteria and secrete a wide range of substrates, from single proteins to protein-protein and protein-DNA complexes. They usually consist of 12 components that are organized into ATP-powered, double-membrane-spanning complexes.
Gabriel Waksman   +2 more
openaire   +3 more sources

Campbell biology (edited by Lisa Urry, Michael Cain, Steven Wasserman, Peter Minorsky and Jane Reece)

open access: yesJournal of Biological Research - Thessaloniki, 2020
Campbell Biology is divided into eight units and 56 chapters. The organization and size of this book are appropriate and easy for first-year university students and help them to learn and digest the content.
Gangxu Shen
doaj   +1 more source

The Biology of Cancer

open access: yesNature, 2015
Normal cells make up tissues, and when these cells lose their ability to behave as a specified, controlled and coordinated unit (dedifferentiation) the defect leads to disarray amongst the cell population. When this occurs, a tumor is formed. (More about
Miriam-Rose Menezes
semanticscholar   +1 more source

Scientific photography and animal behaviour: A historical perspective

open access: yesMètode Science Studies Journal: Annual Review
Louis Daguerre imagined that his invention would be useful mainly for artistic purposes or for personal use (portraits and travel diaries, etc.), but in fact photography soon became a valuable ally of science. The observation and documentation of natural
Enrique Font
doaj   +1 more source

Unique somatic and malignant expression patterns implicate PIWI-interacting RNAs in cancer-type specific biology

open access: yesScientific Reports, 2015
Human PIWI-interacting RNAs (piRNAs) are known to be expressed in germline cells, functionally silencing LINEs and SINEs. Their expression patterns in somatic tissues are largely uncharted.
Victor D. Martinez   +9 more
semanticscholar   +1 more source

Gonad development and reproduction in the monoecious species Chlorophthalmus agassizi (Actinopterygii: Aulopiformes: Chlorophthalmidae) from the Sardinian Waters (Central-Western Mediterranean) [PDF]

open access: yes, 2010
Background. The shortnose greeneye, Chlorophthalmus agassizi Bonaparte, 1840, is a species with a circumglobal distribution and is among the most abundant commercial fishes in some Mediterranean areas.
Cabiddu S, Cau A, Follesa MC, Porcu C
core   +1 more source

A new type of identification problems: optimizing the fractional order in a nonlocal evolution equation [PDF]

open access: yes, 2016
In this paper, we consider a rather general linear evolution equation of fractional type, namely a diffusion type problem in which the diffusion operator is the $s$th power of a positive definite operator having a discrete spectrum in $\R^+$.
Sprekels, Jürgen, Valdinoci, Enrico
core   +4 more sources

PERBANDINGAN PEMBELAJARAN KOOPERATIF TIPE STAD DAN NHT TERHADAP HASIL BELAJAR BIOLOGI

open access: yesBioedukasi: Jurnal Pendidikan Biologi FKIP UM Metro, 2014
The objectives in this research are : (1) To know whether is any difference the average of biology instructional by using model of cooperative learning STAD and NHT type.
Herlina Herlina, Anak Agung Oka
doaj   +1 more source

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