A recursive analysis for form cell recognition

Author(s):  
H. Shinjo ◽  
E. Hadano ◽  
K. Marukawa ◽  
Y. Shima ◽  
H. Sako
Author(s):  
K.W. Lee ◽  
R.H. Meints ◽  
D. Kuczmarski ◽  
J.L. Van Etten

The physiological, biochemical, and ultrastructural aspects of the symbiotic relationship between the Chlorella-like algae and the hydra have been intensively investigated. Reciprocal cross-transfer of the Chlorellalike algae between different strains of green hydra provide a system for the study of cell recognition. However, our attempts to culture the algae free of the host hydra of the Florida strain, Hydra viridis, have been consistently unsuccessful. We were, therefore, prompted to examine the isolated algae at the ultrastructural level on a time course.


1998 ◽  
Vol 18 (1-2) ◽  
pp. 139-144 ◽  
Author(s):  
Beverly Z. Packard ◽  
Akira Komoriya
Keyword(s):  

Author(s):  
Greg Anderson

To conclude the book’ s alternative account of the Athenian politeia, the chapter offers a recursive analysis of the resource flows which made this way of life possible. The result is very different from a conventional modern secular economic analysis. Instead, it treats resource transactions as the lifeblood of a cosmic ecology that united gods, land, and people in a condition of symbiotic interdependency. The most important of all these transactions were those between gods and humans, whereby the latter received secure conditions of existence in exchange for temples, sacrifices, votive treasures, and other often costly ritual offerings. The most important of the resource transactions between humans were marriages, whereby the managerial and reproductive capacities of females were transferred from one household to another, thereby perpetuating the life of the social body. Contrary to the “egalitarian” ethos which moderns believe animated “democratic Athens,” demokratia would also have been unsustainable without the innumerable contributions of resources, material and otherwise, that were made by a relatively small number of super-wealthy Athenian households. And in a polis where members typically worked only for themselves, the existence of these ecologically essential super-wealthy households would have been unsustainable without the routine exploitation of slaves.


2021 ◽  
Vol 15 (3) ◽  
pp. 034109
Author(s):  
Jianwei Li ◽  
Li Dai ◽  
Ningmei Yu ◽  
Yinfeng Wu

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Liyang Zhang ◽  
John A. Zuris ◽  
Ramya Viswanathan ◽  
Jasmine N. Edelstein ◽  
Rolf Turk ◽  
...  

AbstractThough AsCas12a fills a crucial gap in the current genome editing toolbox, it exhibits relatively poor editing efficiency, restricting its overall utility. Here we isolate an engineered variant, “AsCas12a Ultra”, that increased editing efficiency to nearly 100% at all sites examined in HSPCs, iPSCs, T cells, and NK cells. We show that AsCas12a Ultra maintains high on-target specificity thereby mitigating the risk for off-target editing and making it ideal for complex therapeutic genome editing applications. We achieved simultaneous targeting of three clinically relevant genes in T cells at >90% efficiency and demonstrated transgene knock-in efficiencies of up to 60%. We demonstrate site-specific knock-in of a CAR in NK cells, which afforded enhanced anti-tumor NK cell recognition, potentially enabling the next generation of allogeneic cell-based therapies in oncology. AsCas12a Ultra is an advanced CRISPR nuclease with significant advantages in basic research and in the production of gene edited cell medicines.


2020 ◽  
Vol 304 ◽  
pp. 127431 ◽  
Author(s):  
Xueying Pei ◽  
Fangjun Huo ◽  
Yongkang Yue ◽  
Tinggui Chen ◽  
Caixia Yin

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