Zur Entwicklung der Eierstocks- und Eileiterarterien Japanischer Wachteln (Coturnix coturnix japonica) nach dem Schlupf

On the post-hatching development of the arteries supplying the female reproductive organs of Japanese quails
A total of 57 Japanese quails of the following age groups were used for this study: 2 days, and 1, 2, 3, 4, 5, and 6 weeks after hatching. Tensol cement for the corrosion casts was injected via the aortic arch.
In the female Japanese quails, the A. ovarica (sinistra) to the ovar the following four arteries related to the oviduct were typically present: A. oviductalis cranialis, A. oviductalis cranialis accessoria, A. oviductalis media , and A. oviductalis caudalis.
The A. oviductalis cranialis and A. oviductalis cranialis accessoria appeared first at the age of about 4 weeks and from then on developed uniformly. At the age of 5 weeks a surprisingly rapid development of the A. oviductalis media and A. oviductalis caudalis could be observed. Thus at the age of 6 weeks all four oviduct arteries were well developed and often demonstrated in the already laying (sexually mature) animals an enormous amount of hypertrophy.     

Influence of Adrenalectomy on the Developing Rat Thymus During Peri-Weaning Period

Adrenalectomy of 17-, 18- and 19-day-old male and female rats did not cause any changes in the weight of thymus 4 days later. Adrenalectomy on day 20 of age induced a significant hypertrophy of the thymus 4 days later. These results indicate that on day 20 of age, just before weaning, the thymus is under some inhibitory regulation by the adrenal gland.     

Adrenal Renin is Localized in Lysosomal Granules

Both renin and cathepsin B were co-localized in identical granules of adrenocortical cells. At day 16 of gestation, many renin-containing granules were observed and gold particles showed homogeneous intragranular distribution; whereas, those for cathepsin B was distributed heterogene-ously. At day 18 of gestation, renin immunoreactivity was decreased or undetectable, whereas cathepsin B was still demonstrated at the same level as on day 16 of gestation.     

Characterization and classification of Actinobacillus (Haemophilus) pleuropneumoniae plasmids.

Actinobacillus (Haemophilus) pleuropneumoniae plasmids were characterized and classified. They were isolated from A pleuropneumoniae strains different in serotype, year isolated, or location from which isolated. Six of 8 plasmids encoded streptomycin (Sm) and sulfonamide (Su) resistance (SmSu). One of the other plasmids, pVM105, encoded ampicillin (Ap) resistance and another, pHM0, encoded no drug resistance. All SmSu plasmids were transferred to Escherichia coli strains by transformation. Among them, pABO and pMS260 were 8.1 kb and incompatible with each other; they were stable in E coli. The other SmSu plasmids, pHM1, pVM104, pVM106, and pKD25, were 4.3 kb and did not replicate stably in E coli. The former SmSu plasmids were mobilized in E coli strains by a plasmid RP4, which belonged to incompatibility (Inc) group P, but the latter plasmids were not. Further, each 8.1-kb SmSu plasmid and each 4.3-kb plasmid had the same respective restriction pattern. These results indicated that there were at least 2 types of SmSu plasmids in A pleuropneumoniae. The 2 types were classified in 2 groups: H1(pMS260 and pABO) and H2(pHM1, pVM104, pVM106, and pKD25). The H1 and H2 plasmids belonged to different Inc groups, and H2 plasmids belonged to a different Inc group from that of pHMO and pVM105.