A glycoprotein: galactosyltransferase activity in the ascitic fluid and serum of mice with the YC8 tumor]

Tranfer of (14C)-gal from exogenous UDP(14C)-gal has been demonstrated with ovomucoid as glycoprotein acceptor in ascitic fluid sera from Balb/c mice bearing isogenic YC8 tumor. Transfer exists without ovomucoid, in great ratio in ascitic fluid and in sera from ascitic mice too, showing occurrence of endogenous acceptors, the origin of which has to be proved.     

Adaptation of the pituitary gland to prolonged LRH stimulation

Summary With prolonged constant rate infusion of luteinizing hormone-releasing hormone (LRH), the LH secretion rate of the rat pituitary gland changes continuously until a steady state of relative desensitization has developed. Recovery from this state can occur independently from changes in the pituitary's LH content.     

X-ray diffraction of the collagen contained in blood vessels]

An X-ray diffraction study has been undertaken on Human and Rabbit blood-vessels. Vessels are stretched 500% and the diagrams present a great analogy with those obtained from collagen. Thus, it appears, that it is possible to determine by X-Rays some pathological anomalies of the collagen in vessels.     

Occurrence of a characteristic nucleolar structure in pachytene cells

Resumen Se describe el hallazgo de una estructura nucleolar característica en células paquiténicas de anteras deAllium cepa, fijadas en formol y teñidas con fuchsina. Esta estructura se presenta como una pequeña formación semejante a un botón o anillo en el nucleolo de todos los meiocitos observados en ese estadío.

---

---

The work reported in this paper was undertaken during thetenure of a Research Training Fellowship awarded by the International Agency for Research on Cancer.