How to do partial XML serialization?

Question

.NET

Good afternoon.
I communicate with one Web service, POST requests. XML strings are passed in the request and response. The serializer is set up and almost everything is fine.
The only problem is the format. All requests are framed with a tag <Request>, all responses with a tag <Reply>. For example,

<Request>
    <GetAgentInfo>
        ...
    </GetAgentInfo>
</Request>

Is it possible somehow to (de)serialize only the inner element?
Other than adding/removing substrings <Request>, </Request>nothing comes to mind.
PS I will use the preview before posting the question.