... u ovala, nedureroasa, cu diametrul de 0.5-1.5 cm, cu margini estompate nereliefate, fara prurit, si dispar spontan la vitropresiune. Pot aparea si leziuni de recidiva intre 4-12 luni de la contact, sifilidele papuloase lenticulare sau rotunde de 3-10 mm, de culoare rosie. Dispar in circa 2-10 saptam ... Continuare

... de plasma,in care se afla citoplasma cu aspect gelatinos si aproximativ 12 tipuri de organite.SItrtlchtfcs1 taf0tafs24 tltrchtfcs0 tfs24tlang3081tlangfe1033tlangnp3081tinsrsid631589
7tcharrsid6315897 tpar SItrtlchtfcs1 taf0tafs24 tltrchtfcs0 tfs24tinsrsid6315897tcharrsid6315897 ttab Fiecare celu ... Continuare

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ssistulburarilesi ... Continuare

... a a hranei partial digerate din stomac.Printre serpi, aproximativ 400 de specii sunt veninoase. Dintre acestia, cei mai multi traiesc in America si Australia. In Europa se gasesc numai noua specii de serpi otravitori, iar din acestea, in Germania, numai doua vipere cu cruce si vipera aspis regiuni ... Continuare

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... joaca un rol ecologicSItrtlchtfcs1 taf197 tltrchtfcs0 tf197tfs24tlang1036tlangfe1033tlangnp1036tinsrsid3
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... mata din doua celule de forma bobului de fasole care stau fata-n fata lasand o deschidere numita osteola. Prin aceste stomate se realizeaza schimbul de gaze intre planta si mediu si de asemenea se elimina apa. Numarul de stomate difera de la o planta la alta in functie de conditiile de mediu. La pla ... Continuare