A scanning electron microscopy/transmission electron microscopy study of the photocrystallization of amorphous silicon

1983 ◽  
Vol 54 (10) ◽  
pp. 5760-5763 ◽  
Author(s):  
A. Prasad ◽  
K. Ebihara ◽  
P. K. John ◽  
B. Y. Tong ◽  
S. K. Wong ◽  
...  
1990 ◽  
Vol 36 (2) ◽  
pp. 140-144 ◽  
Author(s):  
Franoise Rieu ◽  
G. Fonty ◽  
Brigitte Gaillard ◽  
P. Gouet

The lamb rumen walls were rapidly colonized by an abundant bacterial population after birth. This colonization was examined by electron microscopy in neonatal conventional lambs. The sequence of establishment of the epimural species during the 3 weeks following birth, and the distribution of bacteria on the different sacs of the rumen, were examined by scanning electron microscopy. The population was very dense and consisted of a limited number of morphological types by 2 days after birth. Three types of rods were dominant at that time. The microflora was more complex 2 weeks later. Observations by transmission electron microscopy of desquamated epithelial cells revealed the presence of adherent bacteria that are surrounded by fibrous carbohydrate coats and sometimes partially enclosed by invaginations of the epithelial cell. Key words: rumen, lamb, microflora, scanning electron microscopy, adherence.


1987 ◽  
Vol 21 (1) ◽  
pp. 48-52 ◽  
Author(s):  
J. P. Koopman ◽  
A. M. Stadhouders ◽  
H. M. Kennis ◽  
H. De Boer

Scanning electron micrographs are presented of the ileal epithelium of mice aged 5, 15, 20 and 25 days. During this period the villous pattern develops to full maturity. By the twentieth day of life a segmented filamentous micro-organism colonizes the ileal epithelium and is firmly attached via a small segment. During the first days of colonization the segmented filamentous micro-organisms themselves are subcolonized by small rod-shaped bacteria, presumably lactobacilli. At the age of 25 days this subcolonization was no longer observed.


Sign in / Sign up

Export Citation Format

Share Document