αναπτυξη εμβρυου

Question

&beta;&delta;&omicron;&mu;ά&delta;&alpha; &kappa;&upsilon;&eta;&sigma;&eta;&sigmaf; &beta;ά&sigma;&eta; &pi;&epsilon;&rho;&iota;ό&delta;&omicron;&upsilon; 19&beta;&delta;&omicron;&mu;&alpha;&delta;&omega;&nu;.&mu;&epsilon;&chi;&rho;&iota; &tau;ώ&rho;&alpha; &upsilon;&pi;&epsilon;&rho;&eta;&chi;&omicron;&gamma;&rho;&alpha;&phi;&iota;&kappa;&eta; &epsilon;&iota;&kappa;ό&nu;&alpha; &kappa; &beta;&delta;&omicron;&mu;ά&delta;&alpha;&sigmaf; &kappa;&upsilon;&eta;&sigma;&eta;&sigmaf; &sigma;&upsilon;&mu;&beta;&alpha;&delta;&iota;&zeta;&alpha;&nu;.&sigma;&tau;&omicron; &tau;&epsilon;&lambda;&epsilon;&upsilon;&tau;&alpha;ί&omicron; &upsilon;&pi;&epsilon;&rho;&eta;&chi;&omicron; &epsilon;&nu;ώ &epsilon;ί&mu;&alpha;&iota; 19&beta;&delta;&omicron;&mu;&alpha;&delta;&omega;&nu; &tau; έ&mu;&beta;&rho;&upsilon;&omicron; ή&tau;&alpha;&nu; 18w.&nu;&alpha; &alpha;&nu;&eta;&sigma;&upsilon;&chi;ή&sigma;&omega;?&pi;&iota;&omicron; &pi;&omicron;&lambda;ύ &phi;&omicron;&beta;ά&mu;&alpha;&iota; &gamma;&iota;&alpha;&tau;ί &mu;έ&chi;&rho;&iota; &tau;ώ&rho;&alpha; &sigma;&upsilon;&mu;&beta;&alpha;&delta;&iota;&zeta;&alpha;&nu; &alpha;&upsilon;&tau;ά &tau;&alpha; 2 &epsilon;&nu;ώ &tau;ώ&rho;&alpha; &tau; έ&mu;&beta;&rho;&upsilon;&omicron; &epsilon;&mu;&epsilon;&iota;&nu;&epsilon; &pi;ί&sigma;&omega;.&sigma;&eta;&mu;&epsilon;&iota;&omega;&sigma;&eta; &tau; &sigma;ά&kappa;&chi;&alpha;&rho;&omicron; &mu; &sigma;&tau; &epsilon;&xi;&epsilon;&tau;ά&sigma;&epsilon;&iota;&sigmaf; &mu; ή&tau;&alpha;&nu; 73 &epsilon;&nu;&omega; &sigma;&tau; &pi;&rho;&omicron;&gamma;&gamma;&omicron;&upsilon;&mu;&epsilon;&nu;&epsilon;&sigmaf; &eta;&tau;&alpha;&nu; 86..&mu;ή&pi;&omega;&sigmaf; &pi;&alpha;ί&zeta;&epsilon;&iota; &kappa; &alpha;&upsilon;&tau;&omicron; &kappa;ά&pi;&omicron;&iota;&omicron; &rho;ό&lambda;&omicron;?&nu;&alpha; &alpha;&gamma;&chi;&omega;&theta;&omega;?