0000000000821375
AUTHOR
C. Khaledpour
An abdominal aortic aneurysm (AAA) in combination with duplication of the inferior vena cava (IVC), the right renal artery (RRA) and the right renal vein (RRV)
Intra-abdominal abnormality of vessels may sometimes lead to complications. A case of the rare combination of an abdominal aortic aneurysm (AAA) at the origin of the inferior mesenteric a. with duplications of the inferior vena cava (IVC), the right renal a. (RRA) and the right renal v. (RRV) as well as absence of the left common iliac v. is reported.
Evidence for the presence of two 24-h rhythms 180 degrees out of phase in the pineal gland of male Pirbright-White guinea pigs as monitored by counting "synaptic" ribbons and spherules.
Previous studies have shown that the "synaptic" bodies of mammalian pinealocytes are a heterogeneous group of organelles. Whereas "synaptic" ribbons (SR) exhibit a day/night rhythm with small numbers during daytime and high numbers at night, the so-called "synaptic" spherules (SS) show species-specific differences in their rhythmicity. In the present study the numbers of SR and SS were monitored in male guinea pigs over a full 24-h period at 4-hourly intervals (LD 12:12, lights on at 7:00). The results obtained show that the rhythms of SR numbers and SS numbers are out of phase by 180 degrees. SR numbers are small during daytime and high at night, whereas SS numbers are high during daytime …