Analysis of the growth hormone gene expression in bovine embryos

Early embryonic development is controlled by the genome of both maternal and embryonic . Oocyte maturation , fertilization and the first cleavage divisions characterized by a lack of effective transcription , hence these processes are completely controlled by the factors of maternal origin . Persistence of maternal transcripts depends on the length of the poly (A ), which may be lengthening or shortening . Starting embryonic genome is species-specific and occurs after several cleavage divisions . It connects with the gradual disappearance of maternal mRNA.

Methods for testing the activity of tumor cell invasion

The article discusses some methods for testing the ability of cancer cells to metastasize. A review of the most important methods for the study of this phenomenon both in vivo and in vitro.

The Editorial Board
Andrzej Łukaszyk - przewodniczący, Zofia Bielańska-Osuchowska, Szczepan Biliński, Mieczysław Chorąży, Aleksander Koj, Włodzimierz Korochoda, Leszek Kuźnicki, Aleksandra Stojałowska, Lech Wojtczak

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