Does a prosecution expert witness related case-specific hearsay to the jury and treated it as true to support her opinion?

Here, we do not have a situation in which a prosecution expert witness related case-specific hearsay to the jury and treated those hearsay statements as true to support her opinion. Instead, the prosecutor related the case-specific hearsay, through cross-examination of the defense expert , and asked whether she considered that information in forming her conclusion defendant suffered from PTSD. In other words, the case-specific hearsay was being used to impeach the expert's testimony. Generally, "a witness testifying as an expert ... may be fully cross-examined as to ... the matter upon which his or her opinion is based and the reasons for his or her opinion." ( Evid. Code, 721, subd. (a).) "The scope of cross-examination of an expert witness is especially broad. [Citation.] Evidence that is inadmissible on direct examination may be used to test an expert's credibility, though the court must exercise its discretion under Evidence Code section 352 to limit the evidence to its proper uses." ( People v. Gonzales (2011) 51 Cal.4th 894, 923, 126 Cal.Rptr.3d 1, 253 P.3d 185.)