English to Russian Science Biology (-tech,-chem,micro-)

IHC staining confirmed that the panel comprised antibodies that elicited a strong tumor to normal tissue binding differential in many of the identified antibodies, exhibited a range of binding properties by BIACORE™ analysis, exhibited reactivity to range of overlapping and non- overlapping epitopes and exhibited a range of specificity to 4Ig vs. 2Ig B7-H3. The characteristics of the nine best candidates are shown in Table 3 and Table 4.

Далее идет таблица результатов анализа сравнения специфичности http://tinyurl.com/9hcghc6
а внизу два примечания
* +str also; ** str 3+
Вот не понятно что это str обозначает.

Полный текст тут http://tinyurl.com/8r3oot6

Заранее спасибо