MCQ
B-cell lymphomas are clones of ______ expressing on their surface a unique antibody molecule.
- Anormal RBC
- Bmalignant T cells
- Cnormal B cells
- ✓malignant B cells
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$\begin{array}{cc}
\ce{C2H5 - CH2 - C(Cl) - C2H5}\\
\phantom{...}|\\
\phantom{......}\ce{C2H5}
\end{array}$

| X = x | -3 | -2 | -1 | 0 | 1 |
| P(X = x) | 0.3 | 0.2 | 0.25 | 0.1 | 0.15 |
Then F (-1) = ?
