scholarly journals A preliminary communication upon the cerebral commissures of the Mammalia, with special reference to the Monotremata and Marsupialia

1895 ◽  
Vol 9 ◽  
pp. 635-657 ◽  
Author(s):  
G E Smith
Keyword(s):  
Special Reference ◽  
Cerebral Commissures ◽  
Preliminary Communication

scholarly journals The histology of the cell wall, with special reference to the mode of connexion of cells. preliminary communication

1898 ◽  
Vol 62 (379-387) ◽  
pp. 100-112 ◽  
Keyword(s):  
Cell Wall ◽  
Cell Membrane ◽  
Special Reference ◽  
Original Method ◽  
New Method ◽  
Endosperm Tissue ◽  
Preliminary Communication

Since 1883 I have repeatedly endeavoured to discover some refined and generally applicable method by means of which the fine fibrillæ, or “connecting threads,” traversing the cell membrane might be identified with certainty, and the fact of their existence settled beyond dispute. I was also anxious to be in a position to investigate the development of the threads in endosperm tissue. My researches met with little encouragement until 1894, when I succeeded in finding a new method, by means of which I obtained excellent results with the young developing endosperm tissue of Tamus communis . This I have further elaborated, so that either the original method, or modifications of it, can be applied to tissues generally.

The genesis and development of the wall and connecting threads in the plant cell. Preliminary communication

1900 ◽  
Vol 66 (424-433) ◽  
pp. 186-188 ◽  
Keyword(s):  
Cell Wall ◽  
Special Reference ◽  
Plant Cell ◽  
Preliminary Communication

In the course of my investigations in connection with the forth­coming paper on “ The Histology of the Cell Wall with special Reference to the Mode of Connection of Cells,” certain observations and conclusions concerning the origin and development of the wall-threads and cell-wall have come to light which seem to be of suffi­cient interest to warrant my bringing them to the notice of the Society without delay.

scholarly journals True hermaphroditism in chimaeric mice

Development ◽  
1964 ◽  
Vol 12 (4) ◽  
pp. 735-757
Author(s):  
Andrzej K. Tarkowski
Keyword(s):  
Special Reference ◽  
Reproductive System ◽  
Sex Chromosome ◽  
A Priori ◽  
Microscopic Structure ◽  
Chromosome Mosaicism ◽  
Preliminary Communication ◽  
Number Of Individuals ◽  
Macroscopic Examination ◽  
Newborn Animals

In a preliminary communication on the development of mouse chimaerae formed from fused eggs (Tarkowski, 1961) three cases of intersexuality were reported among newborn animals. Sexing was based exclusively on macroscopic examination of the reproductive system. The present paper deals with the microscopic structure of this system in chimaeric hermaphrodites, with special reference to the structure of the gonads. The occurrence of intersexes among animals developed from fused eggs was considered as one of the proofs of their chimaeric constitution (Tarkowski, 1961). Abnormalities similar to those displayed by these chimaerae have been described in the mouse and related rodents in sporadic spontaneous cases of hermaphroditism. However, while the genesis of the latter is unknown, there are strong indications that hermaphroditism among chimaerae develops on the basis of sex-chromosome mosaicism. This type of mosaicism can be expected a priori to occur in a number of individuals developed from two eggs randomly selected.

Sign in / Sign up

Export Citation Format

Share Document