[Possibilities of ultrasonography in the diagnosis of sex differentiation disorders in children]. / Vozmozhnosti ékhografii v diagnostike narushenii formirovaniia pola u detei.

Ninety-five children with different forms of hermaphroditism aged 3 months to 14 years were examined to assess the potentialities of echography. Ultrasonic examinations of the kidneys, adrenals, pelvic organs (with full bladder, during and after miction), scrotum, and inguinal area were carried out. Echographic picture of urogenital organs in mixed ovarian dysgenesis, congenital deficiency of testosterone biosynthesis or metabolism due to enzymatic deficit, testicular feminization, congenital adrenocortical dysfunction was analyzed and criteria of differential diagnosis of these conditions discussed. The informative value of the method was assessed. Ultrasonic findings were compared with the data other diagnostic methods and reliability and high sensitivity of ultrasonography was demonstrated.

[Comparative parasitological analysis of White Sea herring fry (Clupea pallasi n. maris-albi) raised experimentally and caught at sea]. / Sravnitel'nyi parazitologicheskii analiz molodi belomorskoi sel'di (Clupea pallasi n. maris-albi), vyrashchennoi v éksperimente i poimannoi v more.

Dynamics of the infection with pathogen trematodes of Brachyphallus crenatus (Rud., 1802) and Lecithaster gibbosus (Rud., 1802) in larvae and juvenile herring reared in experimental conditions and in those which were caught in the sea has been observed. Simultaneous infection of juvenile herring in natural environments and in experimental conditions has been noted. The parasitological examination of the material suggests the degree of natural mortality of larvae in the sea. The total rate of the juvenile herring infection in nature ranges from 22 to 92%.