Biological activity of the vegetalizing factor: Decrease after coupling to polysaccharide matrix and enzymatic recovery of active factor

1980 ◽  
Vol 189 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Jochen Born ◽  
Horst Grunz ◽  
Heinz Tiedemann ◽  
Hildegard Tiedemann
2004 ◽  
Vol 12 (20) ◽  
pp. 5415-5426 ◽  
Author(s):  
Hiroyuki Koshio ◽  
Fukushi Hirayama ◽  
Tsukasa Ishihara ◽  
Hiroyuki Kaizawa ◽  
Takeshi Shigenaga ◽  
...  

1931 ◽  
Vol 8 (1) ◽  
pp. 44-54
Author(s):  
E. A. SPAUL ◽  
W. W. MYDDLETON

1. Quantitative estimations directly associate the phosphate phosphorus precipitated by iodine solution from active extracts of the anterior lobe pituitary in dilute acetic acid with the metamorphic activity of the lobe. 2. Substitution of the phosphate content of the iodine precipitate by other radicles (sulphate, acetate, picrate, etc.) results in the loss of activity. 3. The active factor is insoluble in alcohol, chloroform and ether, which distinguishes it from Robertson's growth-promoting tethelin. 4. The melanophore stimulant is independent of the phosphate content. 5. There is a small quantity of phosphate precipitated by iodine solution from posterior lobe extracts which indicates, apart from post-mortem diffusion, either the presence normally of the active factor in this lobe (Cone of Wulzen) or the existence of some other phosphate combination precipitated by iodine, but in effective in metamorphosis.


Author(s):  
G. Kasnic ◽  
S. E. Stewart ◽  
C. Urbanski

We have reported the maturation of an intracisternal A-type particle in murine plasma cell tumor cultures and three human tumor cell cultures (rhabdomyosarcoma, lung adenocarcinoma, and osteogenic sarcoma) after IUDR-DMSO activation. In all of these studies the A-type particle seems to develop into a form with an electron dense nucleoid, presumably mature, which is also intracisternal. A similar intracisternal A-type particle has been described in leukemic guinea pigs. Although no biological activity has yet been demonstrated for these particles, on morphologic grounds, and by the manner in which they develop within the cell, they may represent members of the same family of viruses.


Author(s):  
John L. Beggs ◽  
John D. Waggener ◽  
Wanda Miller

Microtubules (MT) are versatile organelles participating in a wide variety of biological activity. MT involvement in the movement and transport of cytoplasmic components has been well documented. In the course of our study on trauma-induced vasogenic edema in the spinal cord we have concluded that endothelial vesicles contribute to the edema process. Using horseradish peroxidase as a vascular tracer, labeled endothelial vesicles were present in all situations expected if a vesicular transport mechanism was in operation. Frequently,labeled vesicles coalesced to form channels that appeared to traverse the endothelium. The presence of MT in close proximity to labeled vesicles sugg ested that MT may play a role in vesicular activity.


2002 ◽  
Vol 23 (1) ◽  
pp. 79-121 ◽  
Author(s):  
Kathleen Taubert ◽  
Susanne Kraus ◽  
Bärbel Schulze

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
E Spilioti ◽  
B Holmbom ◽  
P Moutsatsou
Keyword(s):  

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
HRW Dharmaratne ◽  
BL Tekwani ◽  
M Jacob ◽  
NPD Nanayakkara

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